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Heyco® Strain Relief Selector Tool
GUIDE TO STRAIN RELIEF GROUPS
STRAIN RELIEF GROUP ASSEMBLY
PLIERS
REQUIRED?		 ASSEMBLY EQUIPMENT AVAILABLE? PRE-ASSEMBLY TO CABLE
FEATURE?		 FINISHED FIT ACROSS ENTIRE PANEL THICKNESS RANGE?
Snap-In Cordgrip Strain Reliefs No No assembly equipment required Yes – may be applied to cable prior to final assembly Yes – multiple locking step fingers provide a finished fit across a wide range of panel thicknesses
Lockit™ Strain Reliefs – ST and RDD Yes Yes – semi-automatic assembly equipment available Yes – snap Lockits onto cable for fast final assemby Yes – multiple locking step fingers provide a finished fit across a wide range of panel thicknesses
Original Strain Reliefs Yes Yes – hand-assist Air Tool available No – strain relief functionality dependent on final assembly No – matching the maximum panel thickness provides the best finished fit
Guide to Strain Relief Styles (1)
Straight-thru Wire, Cable or Harness exits the Strain Relief in a straight line
Bell-Mouth Flared trumpet exit eases the cable into a lazy bend
Pigtail Integral nylon spring eases the cable into a lazy bend for maximum flex protection
Right Angle Cable exits flush along the panel
European Meets European requirements; ie, Strain Relief remains attached to the panel during cable removal or replacement

Choose your cable’s diameter or width:
To see all options, please scroll down

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height
x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-In Cordgrip Strain Reliefs
Round .065 .187 Double D .625 .550 .062 .125 Straight-thru M4808 – RSCG 625 1342 SRP 625-550 1351 2497 DD 625-550 Snap-in style SR – no Assembly Equipment required
Pigtail M4908 – RSCG 625-7
.220 Double D .500 .450 .062 .125 Straight-thru M4802 – RSCG 500 1337 SRP 500-450 1351 2491 DD 500-445
Pigtail M4902 – RSCG 500-7

Lockit™ Strain Reliefs – RDD
Round .130 .210 Double D .625 .550 .032 .100 Straight-thru 1870 1871 RDD 101A 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Right Angle 1816 1817 RDD 101A-90 0026 n/a consult Heyco

Original Strain Reliefs
Flat .090 x
.180		 .110 x
.210		 Double D .375 .345 .032 .062 Straight-thru 1017 1018 SR 2P-4 1334 SRP 375-345 1350 2617 DP 375 * 0022 0171
.063 .125 Straight-thru 1034 1035 SR 2L-1
.330 .032 .062 Bell-Mouth 1020 1021 SR 2P-5 1333 SRP 375-330
Round .125 .187 Double D .375 .330 .032 .062 Straight-thru 1060 1061 SR 2M-1
Flat .120 .220 Double D .437 .390 .020 .040 Straight-thru 1074 1075 SR 3A-4 1335 SRP 437-390 1351 2488 DD 437-390 0021 0173
.041 .062 Straight-thru 1077 1078 SR 3P-4 1335 SRP 437-390 1351 2488 DD 437-390 0022 0175
.063 .100 Straight-thru 1104 1105 SR 3W-1
.101 .156 Straight-thru 1094 1095 SR 3L-1 1335 SRP 437-390 1351 n/a .156 thk panel
.032 .062 Bell-Mouth 1080 1081 SR 3P-5 1335 SRP 437-390 1351 2488 DD 437-390
Right Angle 1354 1355 SR 13-1
.500 .445 .032 .100 Straight-thru 1130 1131 SR 4P-4 .445 flats – consult Heyco 2491 DD 500-445 0022 0179
Round .220 .245 Double D .500 .450 .032 .062 Straight-thru 1157 1158 SR 5MN-3 1337 SRP 500-450 1351
.063 .100 Straight-thru 1140 1141 SR 5M-3
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height
x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-In Cordgrip Strain Reliefs
Round .065 .187 Double D .625 .550 .062 .125 Straight-thru M4808 – RSCG 625 1342 SRP 625-550 1351 2497 DD 625-550 Snap-in style SR – no Assembly Equipment required
Pigtail M4908 – RSCG 625-7
.220 Double D .500 .450 .062 .125 Straight-thru M4802 – RSCG 500 1337 SRP 500-450 1351 2491 DD 500-445
Pigtail M4902 – RSCG 500-7

Lockit™ Strain Reliefs – RDD
Round .130 .210 Double D .625 .550 .032 .100 Straight-thru 1870 1871 RDD 101A 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Right Angle 1816 1817 RDD 101A-90 0026 n/a consult Heyco

Original Strain Reliefs
Flat .090 x
.180		 .110 x
.210		 Double D .375 .345 .032 .062 Straight-thru 1017 1018 SR 2P-4 1334 SRP 375-345 1350 2617 DP 375 * 0022 0171
.063 .125 Straight-thru 1034 1035 SR 2L-1
.330 .032 .062 Bell-Mouth 1020 1021 SR 2P-5 1333 SRP 375-330
Round .125 .187 Double D .375 .330 .032 .062 Straight-thru 1060 1061 SR 2M-1
Flat .120 .220 Double D .437 .390 .020 .040 Straight-thru 1074 1075 SR 3A-4 1335 SRP 437-390 1351 2488 DD 437-390 0021 0173
.041 .062 Straight-thru 1077 1078 SR 3P-4 1335 SRP 437-390 1351 2488 DD 437-390 0022 0175
.063 .100 Straight-thru 1104 1105 SR 3W-1
.101 .156 Straight-thru 1094 1095 SR 3L-1 1335 SRP 437-390 1351 n/a .156 thk panel
.032 .062 Bell-Mouth 1080 1081 SR 3P-5 1335 SRP 437-390 1351 2488 DD 437-390
Right Angle 1354 1355 SR 13-1
.500 .445 .032 .100 Straight-thru 1130 1131 SR 4P-4 .445 flats – consult Heyco 2491 DD 500-445 0022 0179
Round .220 .245 Double D .500 .450 .032 .062 Straight-thru 1157 1158 SR 5MN-3 1337 SRP 500-450 1351
.063 .100 Straight-thru 1140 1141 SR 5M-3

* For Round Mounting Holes only

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-In Cordgrip Strain Reliefs
Round .115 .250 Double D .500 .450 .062 .125 Straight-thru M4800 – SCG 500 1337 SRP 500-450 1351 2491 DD 500-445 Snap-in style SR – no Assembly Equipment required
Pigtail M4900 – SCG 500-7
.069 .250 Double D .750 .660 .062 .125 Straight-thru M4814 – RSCG 750 1344 SRP 750-660 1351 2503 DD 750-625
Pigtail M4914 – RSCG 750-7
.095 .260 Double D .875 .770 .062 .125 Straight-thru M4820 – RSCG 875 1345 SRP 875-770 1352 2509 DD 875-770
Pigtail M4920 – RSCG 875-7

Lockit™ Strain Reliefs – ST
Both .220 .290 Rectangular .453 .512 .032 .062 Straight-thru 1839 1840 ST 101A .453 x .512 split panel or U-slot 1890 RP 115-130 0025 n/a ST15 0ST0 0ST6 consult Heyco
Round .220 .290 Rectangular .453 .512 .032 .100 Straight-thru 1832 1833 ST 101N .453 x .512 rectangular hole 1890 RP 115-130 0020 n/a 0ST1 0ST4 0ST3 0ST3E

Lockit™ Strain Reliefs – RDD
Round .220 .290 Double D .625 .550 .032 .100 Straight-thru 1852 1853 RDD 101 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1773 1774 RDD 101-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1818 1819 RDD 101-90

Original Strain Reliefs
Round .250 .250 Elongated .560 .730 .062 .125 Straight-thru 1487 – SR 30-1A .560 x .730 elongated hole consult Heyco 0022 0195
.265 .265 Elongated .560 .730 .062 .125 Straight-thru 1490 – SR 30-1B
Flat .150 .280 n/a n/a n/a n/a n/a Straight-thru 1854 1841 ISR 14-27 * n/a n/a n/a
Round .250 .290 Double D .500 .450 .032 .062 Straight-thru 1150 1151 SR 5N-4 1337 SRP 500-450 1351 2491 DD 500-445 0022 0179
.100 Straight-thru 1137 1138 SR 5P3-4 **
.063 .100 Straight-thru 1147 1148 SR 5P-4
.101 .156 Straight-thru 1154 1155 SR 5L-1
.032 .062 Bell-Mouth 1143 1144 SR 5N-5
.032 .062 Pigtail 1590 1591 SR 5N-7
.063 .100 Pigtail 1593 1594 SR 5P-7
.032 .100 Right Angle 1374 1375 SR 15-1
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-In Cordgrip Strain Reliefs
Round .115 .250 Double D .500 .450 .062 .125 Straight-thru M4800 – SCG 500 1337 SRP 500-450 1351 2491 DD 500-445 Snap-in style SR – no Assembly Equipment required
Pigtail M4900 – SCG 500-7
.069 .250 Double D .750 .660 .062 .125 Straight-thru M4814 – RSCG 750 1344 SRP 750-660 1351 2503 DD 750-625
Pigtail M4914 – RSCG 750-7
.095 .260 Double D .875 .770 .062 .125 Straight-thru M4820 – RSCG 875 1345 SRP 875-770 1352 2509 DD 875-770
Pigtail M4920 – RSCG 875-7

Lockit™ Strain Reliefs – ST
Both .220 .290 Rectangular .453 .512 .032 .062 Straight-thru 1839 1840 ST 101A .453 x .512 split panel or U-slot 1890 RP 115-130 0025 n/a ST15 0ST0 0ST6 consult Heyco
Round .220 .290 Rectangular .453 .512 .032 .100 Straight-thru 1832 1833 ST 101N .453 x .512 rectangular hole 1890 RP 115-130 0020 n/a 0ST1 0ST4 0ST3 0ST3E

Lockit™ Strain Reliefs – RDD
Round .220 .290 Double D .625 .550 .032 .100 Straight-thru 1852 1853 RDD 101 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1773 1774 RDD 101-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1818 1819 RDD 101-90

Original Strain Reliefs
Round .250 .250 Elongated .560 .730 .062 .125 Straight-thru 1487 – SR 30-1A .560 x .730 elongated hole consult Heyco 0022 0195
.265 .265 Elongated .560 .730 .062 .125 Straight-thru 1490 – SR 30-1B
Flat .150 .280 n/a n/a n/a n/a n/a Straight-thru 1854 1841 ISR 14-27 * n/a n/a n/a
Round .250 .290 Double D .500 .450 .032 .062 Straight-thru 1150 1151 SR 5N-4 1337 SRP 500-450 1351 2491 DD 500-445 0022 0179
.100 Straight-thru 1137 1138 SR 5P3-4 **
.063 .100 Straight-thru 1147 1148 SR 5P-4
.101 .156 Straight-thru 1154 1155 SR 5L-1
.032 .062 Bell-Mouth 1143 1144 SR 5N-5
.032 .062 Pigtail 1590 1591 SR 5N-7
.063 .100 Pigtail 1593 1594 SR 5P-7
.032 .100 Right Angle 1374 1375 SR 15-1

* Latch style “Knot Not” SR replaces the “UL Knot” and assembles directly to wire or cable
** SR 5P3-4 Minimum Cable Diameter is .255″.

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrips Strain Reliefs
Round .105 .312 Double D .625 .550 .062 .125 Straight-thru M4806 – SCG 625 1342 SRP 625-550 1351 2497 DD 625-550 Snap-in style SR – no Assembly Equipment required
Pigtail M4906 – SCG 625-7

Lockit™ Strain Reliefs – ST
Flat .120 X .220 .160 X .300 Rectangular .453 .512 .032 .100 Straight-thru 1829 1830 ST 100N .453 x .512 rectangular hole 1890 RP 115-130 0020 n/a 0ST1 0ST4 0ST3 0ST3E

Lockit Strain Reliefs – RDD
Flat .105 x .220 .120 x .315 Double D .625 .550 .032 .100 Straight-thru 1872 1873 RDD 100A 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1769 1770 RDD 100A-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1806 1807 RDD 100A-90
.116 x .300 .160 x .315 Double D .625 .550 .032 .100 Straight-thru 1874 1875 RDD 100 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1771 1772 RDD 100-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1808 1809 RDD 100-90

Original Strain Reliefs
Flat .120 X .280 .150 X .300 Double D .500 .465 .032 .062 Straight-thru 1120 1121 SR 4N-4 1340 SRP 500-465 1351 2491 DD 500-445 0022 0179
.063 .100 Straight-thru 1117 1118 SR 4K-4
.101 .156 Straight-thru 1127 1128 SR 4L-4 1340 SRP 500-465 1351 n/a .156 thk panel
.032 .062 Bell-Mouth 1108 1109 SR 4N-5 1340 SRP 500-465 1351 2491 DD 500-445
Pigtail 1541 1542 SR 4N-7
.020 .040 Straight-thru 1181 1182 SR 4A-6 * 1340 SRP 500-465 1351 2491 DD 500-445 0021 0177
.041 .062 Straight-thru 1187 1188 SR 4N-6 * 1340 SRP 500-465 1351 2491 DD 500-445 0022 0179
.063 .100 Straight-thru 1190 1191 SR 4K-6 *
.160 X .300 Double D .500 .450 .020 .040 Right Angle 1361 1362 SR 14A-1 1337 SRP 500-450 1351 2491 DD 500-445 0021 0177
.041 .100 Right Angle 1364 1365 SR 14-1 1337 SRP 500-450 1351 2491 DD 500-445 0022 0179
Round .300 .300 Double D .500 .465 .032 .090 Straight-thru 1184 1185 SR 6W-1
.625 .550 .032 .062 Straight-thru 1217 1218 SR 6N-4 1342 SRP 625-550 1351 2497 DD 625-550
.063 .125 Straight-thru 1210 1211 SR 6P-4
.062 .125 Bell-Mouth 1226 1227 SR 6P-5
.032 .062 Pigtail 1596 1597 SR 6N-7
.063 .125 Pigtail 1602 1603 SR 6P-7
Round .625 n/a .062 .125 European 3772 3773 SR 6P10 CEE ** two mounting holes for European requirements
.315 .320 Double D .625 .550 .062 .125 Bell-Mouth 1232 1233 SR 6P2-5 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrips Strain Reliefs
Round .105 .312 Double D .625 .550 .062 .125 Straight-thru M4806 – SCG 625 1342 SRP 625-550 1351 2497 DD 625-550 Snap-in style SR – no Assembly Equipment required
Pigtail M4906 – SCG 625-7

Lockit™ Strain Reliefs – ST
Flat .120 X .220 .160 X .300 Rectangular .453 .512 .032 .100 Straight-thru 1829 1830 ST 100N .453 x .512 rectangular hole 1890 RP 115-130 0020 n/a 0ST1 0ST4 0ST3 0ST3E

Lockit Strain Reliefs – RDD
Flat .105 x .220 .120 x .315 Double D .625 .550 .032 .100 Straight-thru 1872 1873 RDD 100A 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1769 1770 RDD 100A-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1806 1807 RDD 100A-90
.116 x .300 .160 x .315 Double D .625 .550 .032 .100 Straight-thru 1874 1875 RDD 100 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a ST16 ST14 ST13 ST13E
Pigtail 1771 1772 RDD 100-7 1342 SRP 625-550 1351 2497 DD 625-550 0026 n/a consult Heyco
Right Angle 1808 1809 RDD 100-90

Original Strain Reliefs
Flat .120 X .280 .150 X .300 Double D .500 .465 .032 .062 Straight-thru 1120 1121 SR 4N-4 1340 SRP 500-465 1351 2491 DD 500-445 0022 0179
.063 .100 Straight-thru 1117 1118 SR 4K-4
.101 .156 Straight-thru 1127 1128 SR 4L-4 1340 SRP 500-465 1351 n/a .156 thk panel
.032 .062 Bell-Mouth 1108 1109 SR 4N-5 1340 SRP 500-465 1351 2491 DD 500-445
Pigtail 1541 1542 SR 4N-7
.020 .040 Straight-thru 1181 1182 SR 4A-6 * 1340 SRP 500-465 1351 2491 DD 500-445 0021 0177
.041 .062 Straight-thru 1187 1188 SR 4N-6 * 1340 SRP 500-465 1351 2491 DD 500-445 0022 0179
.063 .100 Straight-thru 1190 1191 SR 4K-6 *
.160 X .300 Double D .500 .450 .020 .040 Right Angle 1361 1362 SR 14A-1 1337 SRP 500-450 1351 2491 DD 500-445 0021 0177
.041 .100 Right Angle 1364 1365 SR 14-1 1337 SRP 500-450 1351 2491 DD 500-445 0022 0179
Round .300 .300 Double D .500 .465 .032 .090 Straight-thru 1184 1185 SR 6W-1
.625 .550 .032 .062 Straight-thru 1217 1218 SR 6N-4 1342 SRP 625-550 1351 2497 DD 625-550
.063 .125 Straight-thru 1210 1211 SR 6P-4
.062 .125 Bell-Mouth 1226 1227 SR 6P-5
.032 .062 Pigtail 1596 1597 SR 6N-7
.063 .125 Pigtail 1602 1603 SR 6P-7
Round .625 n/a .062 .125 European 3772 3773 SR 6P10 CEE ** two mounting holes for European requirements
.315 .320 Double D .625 .550 .062 .125 Bell-Mouth 1232 1233 SR 6P2-5 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183

* Strain Relief -6 series distinguished by internal flex-protecting radii.
** Strain Relief remains attached to the panel during cable removal or replacement.

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .230 .395 Double D .750 .660 .062 .125 Straight-thru M4812 – SCG 750 1344 SRP 750-660 1351 2503 DD 750-625 Snap-in style SR – no Assembly Equipment required
Pigtail M4912 – SCG 750-7

Lockit™ Strain Reliefs – ST
Flat .030 x .100 .140 x .380 Rectangular .453 .630 .032 .100 Straight-thru 1847 1846 ST 100L .453 x .630 rectangular hole consult Heyco 0023 n/a ST12 ST11 ST10 consult Heyco
Round .290 .360 Square .689 .689 .032 .156 Straight-thru 1836 1837 ST 201N .689 x .689 square hole 1892 RP 175-175 0073 n/a 0ST7 0ST9 0ST8 consult Heyco

Lockit™ Strain Reliefs – RDD
Round .300 .330 Double D .625 .550 .032 .062 Straight-thru 1800 1801 RDD 6N-2 1342 SRP 625-550 1351 2497 DD 625-550 consult Heyco n/a ST32 ST33
Both .173 .380 Square 1.142 1.142 .020 .032 Straight-thru 1843 1842 LSR 1939-300 1.142 x 1.142 square hole consult Heyco Snap-in style SR – no Assembly Equipment required
Round .290 .385 Double D .875 .770 .032 .156 Straight-thru 1857 1858 RDD 201 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1855 1856 RDD 201-2
.032 .156 Right Angle 1820 1821 RDD 201-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90

Original Strain Reliefs
Round .300 .330 Double D .625 .550 .032 .062 Straight-thru 1197 – SR 6N2-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.290 .330 Double D .625 .550 .063 .125 Right Angle 1320 1321 SR 10-2
Flat .120 x .280 .160 x .340 Double D .500 .460 .032 .095 Straight-thru 1114 1115 SR 4K-1 1339 SRP 500-460 1351 2491 DD 500-445 0022 0179
.096 .187 Straight-thru 1124 1125 SR 4L-1 1339 SRP 500-460 1351 n/a .187 thk panel
.150 x .350 .160 x .370 Double D .562 .525 .062 .125 Right Angle 1384 1385 SR 16-1 1341 SRP 562-530 1351 2494 DD 562-530 0022 0181
Round .325 .360 Round .625 n/a .062 .125 European 3776 3777 SR 6P30 CEE ** two mounting holes for Euro requirements 0022 0183
.290 .360 Double D .625 .550 .078 .156 Straight-thru 1214 1215 SR 6L-1 1342 SRP 625-550 1351 2497 DD 625-550
.325 .360 Double D .625 .550 .032 .062 Straight-thru 1200 1201 SR 6N3-4
.063 .125 Straight-thru 1207 1208 SR 6P3-4
.032 .062 Bell-Mouth 1223 1224 SR 6N3-5
.063 .125 Bell-Mouth 1220 1221 SR 6P3-5
.032 .062 Pigtail 1599 1600 SR 6N3-7
.063 .125 Pigtail 1605 1606 SR 6P3-7
.062 .125 Right Angle 1327 1328 SR 11-2
.875 .770 .062 .125 Straight-thru 1240 1241 SR 7K-2 1345 SRP 875-770 1352 2509 DD 875-770 0022 0189
Straight-thru 1271 1272 SR 7KR-2 *
Both .000 .400 Double D .875 .770 .062 .125 European 1724 – USR 400 ** 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required
Flat .000 .400 Double D .875 .840 .062 .125 European 1726 – USR 401 **
Round .390 .405 Double D .625 .550 .032 .062 Straight-thru 1202 1203 SR 6N5-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.063 .125 Straight-thru 1204 1205 SR 6P5-4
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .230 .395 Double D .750 .660 .062 .125 Straight-thru M4812 – SCG 750 1344 SRP 750-660 1351 2503 DD 750-625 Snap-in style SR – no Assembly Equipment required
Pigtail M4912 – SCG 750-7

Lockit™ Strain Reliefs – ST
Flat .030 x .100 .140 x .380 Rectangular .453 .630 .032 .100 Straight-thru 1847 1846 ST 100L .453 x .630 rectangular hole consult Heyco 0023 n/a ST12 ST11 ST10 consult Heyco
Round .290 .360 Square .689 .689 .032 .156 Straight-thru 1836 1837 ST 201N .689 x .689 square hole 1892 RP 175-175 0073 n/a 0ST7 0ST9 0ST8 consult Heyco

Lockit™ Strain Reliefs – RDD
Round .300 .330 Double D .625 .550 .032 .062 Straight-thru 1800 1801 RDD 6N-2 1342 SRP 625-550 1351 2497 DD 625-550 consult Heyco n/a ST32 ST33
Both .173 .380 Square 1.142 1.142 .020 .032 Straight-thru 1843 1842 LSR 1939-300 1.142 x 1.142 square hole consult Heyco Snap-in style SR – no Assembly Equipment required
Round .290 .385 Double D .875 .770 .032 .156 Straight-thru 1857 1858 RDD 201 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1855 1856 RDD 201-2
.032 .156 Right Angle 1820 1821 RDD 201-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90

Original Strain Reliefs
Round .300 .330 Double D .625 .550 .032 .062 Straight-thru 1197 – SR 6N2-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.290 .330 Double D .625 .550 .063 .125 Right Angle 1320 1321 SR 10-2
Flat .120 x .280 .160 x .340 Double D .500 .460 .032 .095 Straight-thru 1114 1115 SR 4K-1 1339 SRP 500-460 1351 2491 DD 500-445 0022 0179
.096 .187 Straight-thru 1124 1125 SR 4L-1 1339 SRP 500-460 1351 n/a .187 thk panel
.150 x .350 .160 x .370 Double D .562 .525 .062 .125 Right Angle 1384 1385 SR 16-1 1341 SRP 562-530 1351 2494 DD 562-530 0022 0181
Round .325 .360 Round .625 n/a .062 .125 European 3776 3777 SR 6P30 CEE ** two mounting holes for Euro requirements 0022 0183
.290 .360 Double D .625 .550 .078 .156 Straight-thru 1214 1215 SR 6L-1 1342 SRP 625-550 1351 2497 DD 625-550
.325 .360 Double D .625 .550 .032 .062 Straight-thru 1200 1201 SR 6N3-4
.063 .125 Straight-thru 1207 1208 SR 6P3-4
.032 .062 Bell-Mouth 1223 1224 SR 6N3-5
.063 .125 Bell-Mouth 1220 1221 SR 6P3-5
.032 .062 Pigtail 1599 1600 SR 6N3-7
.063 .125 Pigtail 1605 1606 SR 6P3-7
.062 .125 Right Angle 1327 1328 SR 11-2
.875 .770 .062 .125 Straight-thru 1240 1241 SR 7K-2 1345 SRP 875-770 1352 2509 DD 875-770 0022 0189
Straight-thru 1271 1272 SR 7KR-2 *
Both .000 .400 Double D .875 .770 .062 .125 European 1724 – USR 400 ** 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required
Flat .000 .400 Double D .875 .840 .062 .125 European 1726 – USR 401 **
Round .390 .405 Double D .625 .550 .032 .062 Straight-thru 1202 1203 SR 6N5-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.063 .125 Straight-thru 1204 1205 SR 6P5-4

* SR 7KR-2 is distinguished from SR 7K-2 by a key feature to ensure rotation prevention
** Strain Relief remains attached to the panel during cable removal or replacement. Note: European USR Strain Reliefs may be pre-assembled to the cable for faster final assembly.

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Lockit™ Strain Reliefs – ST
Round .355 .420 Square .689 .689 .032 .156 Straight-thru 1848 1849 ST 301N .689 x .689 square hole 1892 RP 175-175 0073 n/a 0ST7 0ST9 0ST8 consult Heyco
Flat .150 x .340 .200 x .430 Square .689 .689 .032 .156 Straight-thru 1834 1835 ST 200N

Lockit™ Strain Reliefs – RDD
Flat .150 x .340 .240 x .430 Double D .875 .770 .032 .156 Straight-thru 1878 1879 RDD 200 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1876 1877 RDD 200-2
.032 .156 Right Angle 1810 1811 RDD 200-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90
1.109 1.000 .062 .187 Straight-thru 1798 1799 RDD 510 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST20 ST27 ST26 consult Heyco
Round .340 .430 Double D .875 .770 .032 .156 Straight-thru 1861 1862 RDD 301 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1859 1860 RDD 301-2
.032 .156 Right Angle 1824 1825 RDD 301-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90

Original Strain Reliefs
Flat .060 x .300 .160 x .410 Elongated .375 .625 .032 .100 Straight-thru 1814 1815 SR 302-1 varies with cable size consult Heyco 0022 0191
.101 .156 Straight-thru 1804 1805 SR 300-1
.150 x .350 .200 x .410 Double D .562 .530 .032 .062 Straight-thru 1170 1171 SR 5KN-4 1341 SRP 562-530 1351 2494 DD 562-530 0022 0181
.063 .125 Straight-thru 1167 1168 SR 5K-4
.150 x .370 .160 x .420 Double D .562 .530 .062 .125 Straight-thru 1174 1175 SR 5W-1
.150 x .400 .160 x .410 Double D .625 .550 .032 .062 Straight-thru 1160 1161 SR 6N4-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.063 .125 Straight-thru 1163 1164 SR 6P4-4
.150 x .300 .160 x .410 Double D .625 .550 .062 .125 Bell-Mouth 1229 1230 SR 6K-5
.150 x .350 .200 x .430 Elongated .560 .730 .062 .125 Straight-thru 1484 1485 SR 30-1 .560 x .730 elongated hole consult Heyco 0022 0195
.032 .080 Right Angle 1424 1425 SR 20-1
.081 .125 Right Angle 1434 1435 SR 20L-1
Round .340 .430 Double D .750 .660 .032 .062 Straight-thru 1244 1245 SR 7N-2 1344 SRP 750-660 1351 2503 DD 750-625 0028 0185
.063 .125 Straight-thru 1237 1238 SR 7P-2 1344 SRP 750-660 1351 2503 DD 750-625 0022 0187
.062 .125 Pigtail 1611 1612 SR 7P-7
.062 .125 Right Angle 1397 1398 SR 17-2
.875 .770 .062 .125 Straight-thru 1247 1248 SR 7W-2 1345 SRP 875-770 1352 2509 DD 875-770 0022 0189
.126 .200 Straight-thru 1250 1251 SR 7L-2 1345 SRP 875-770 1352 n/a .200 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Flat .350 .430 Round .875 KO .032 .125 Straight-thru 3029 – 551 COMBINATION CONNECTOR 1/2 KO 3998 KOS 1/2 Gray Zinc Die-cast parts – hand assembly only
3040 – 551 COMBINATION CONN NO NUT
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Lockit™ Strain Reliefs – ST
Round .355 .420 Square .689 .689 .032 .156 Straight-thru 1848 1849 ST 301N .689 x .689 square hole 1892 RP 175-175 0073 n/a 0ST7 0ST9 0ST8 consult Heyco
Flat .150 x .340 .200 x .430 Square .689 .689 .032 .156 Straight-thru 1834 1835 ST 200N

Lockit™ Strain Reliefs – RDD
Flat .150 x .340 .240 x .430 Double D .875 .770 .032 .156 Straight-thru 1878 1879 RDD 200 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1876 1877 RDD 200-2
.032 .156 Right Angle 1810 1811 RDD 200-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90
1.109 1.000 .062 .187 Straight-thru 1798 1799 RDD 510 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST20 ST27 ST26 consult Heyco
Round .340 .430 Double D .875 .770 .032 .156 Straight-thru 1861 1862 RDD 301 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1859 1860 RDD 301-2
.032 .156 Right Angle 1824 1825 RDD 301-90 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17-90 ST19-90

Original Strain Reliefs
Flat .060 x .300 .160 x .410 Elongated .375 .625 .032 .100 Straight-thru 1814 1815 SR 302-1 varies with cable size consult Heyco 0022 0191
.101 .156 Straight-thru 1804 1805 SR 300-1
.150 x .350 .200 x .410 Double D .562 .530 .032 .062 Straight-thru 1170 1171 SR 5KN-4 1341 SRP 562-530 1351 2494 DD 562-530 0022 0181
.063 .125 Straight-thru 1167 1168 SR 5K-4
.150 x .370 .160 x .420 Double D .562 .530 .062 .125 Straight-thru 1174 1175 SR 5W-1
.150 x .400 .160 x .410 Double D .625 .550 .032 .062 Straight-thru 1160 1161 SR 6N4-4 1342 SRP 625-550 1351 2497 DD 625-550 0022 0183
.063 .125 Straight-thru 1163 1164 SR 6P4-4
.150 x .300 .160 x .410 Double D .625 .550 .062 .125 Bell-Mouth 1229 1230 SR 6K-5
.150 x .350 .200 x .430 Elongated .560 .730 .062 .125 Straight-thru 1484 1485 SR 30-1 .560 x .730 elongated hole consult Heyco 0022 0195
.032 .080 Right Angle 1424 1425 SR 20-1
.081 .125 Right Angle 1434 1435 SR 20L-1
Round .340 .430 Double D .750 .660 .032 .062 Straight-thru 1244 1245 SR 7N-2 1344 SRP 750-660 1351 2503 DD 750-625 0028 0185
.063 .125 Straight-thru 1237 1238 SR 7P-2 1344 SRP 750-660 1351 2503 DD 750-625 0022 0187
.062 .125 Pigtail 1611 1612 SR 7P-7
.062 .125 Right Angle 1397 1398 SR 17-2
.875 .770 .062 .125 Straight-thru 1247 1248 SR 7W-2 1345 SRP 875-770 1352 2509 DD 875-770 0022 0189
.126 .200 Straight-thru 1250 1251 SR 7L-2 1345 SRP 875-770 1352 n/a .200 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Flat .350 .430 Round .875 KO .032 .125 Straight-thru 3029 – 551 COMBINATION CONNECTOR 1/2 KO 3998 KOS 1/2 Gray Zinc Die-cast parts – hand assembly only
3040 – 551 COMBINATION CONN NO NUT

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .180 .440 Double D 1.000 .875 .062 .125 Straight-thru M4826 – RSCG 1000 1336 SRP 1000-875 1352 2713 DP 1000 * Snap-in style SR – no Assembly Equipment required
Pigtail M4926 – RSCG 1000-7
.170 .450 Double D .875 .770 .062 .125 Straight-thru M4818 – SCG 875 1345 SRP 875-770 1352 2509 DD 875-770
Pigtail M4918 – SCG 875-7
.250 .485 Double D 1.093 .970 .062 .125 Straight-thru M4832 – RSCG 1093 1338 SRP 1093-970 1352 2723 DP 1093 *
Pigtail M4932 – RSCG 1093-7
1.125 1.000 .062 .125 Straight-thru M4838 – RSCG 1125 1348 SRP 1130-1005 1353 2717 DD 1109-1000
.260 .546 Double D 1.000 .875 .062 .125 Straight-thru M4824 – SCG 1000 1336 SRP 1000-875 1352 2713 DP 1000 *
Pigtail M4924 – SCG 1000-7

Lockit™ Strain Reliefs – RDD
Both .000 .600 Square .875 .875 .032 .100 Straight-thru 1266 – SR 8R-200 .875 x .875 split panel or U-slot consult Heyco Split Panel style SR – no Assembly Equipment required
Round .420 .450 Double D .875 .770 .032 .156 Straight-thru 1865 1866 RDD 401 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1882 1883 RDD 401-2
.525 .600 Double D 1.109 1.000 .062 .187 Straight-thru 1868 1869 RDD 501 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST20 ST27 ST26

Lockit™ Strain Reliefs – Ratchet
Both .115 .575 Double D .875 .770 .062 .125 Straight-thru 1280 1281 RSR 875 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required

Original Strain Reliefs
Flat .200 x .370 .240 x .510 Elongated .750 .875 .062 .125 Straight-thru 1504 1505 SR 33-1 .750 x .875 elongated hole consult Heyco 0022 0197
Right Angle 1454 1455 SR 23-1
Round .525 .600 Double D .875 .840 .032 .062 Straight-thru 1254 1255 SR 8N-2 1346 SRP 875-840 1352 2509 DD 875-770 0028 0193
.063 .125 Straight-thru 1260 1261 SR 8P-2 1346 SRP 875-840 1352 2509 DD 875-770 0022 0189
.126 .187 Straight-thru 1274 1275 SR 8L-1 1346 SRP 875-840 1352 n/a .187 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Flat .180 .640 Round .875 KO .032 .125 Straight-thru 3043 – 751 ROMEX CONNECTOR 1/2 KO 3997 KOS 1/2 Gray Zinc Die-cast parts – hand assembly only
Round .400 .630 Round .875 KO .032 .125 Right Angle 3030 – 561 3/8 90 ANGLE CONN
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .180 .440 Double D 1.000 .875 .062 .125 Straight-thru M4826 – RSCG 1000 1336 SRP 1000-875 1352 2713 DP 1000 * Snap-in style SR – no Assembly Equipment required
Pigtail M4926 – RSCG 1000-7
.170 .450 Double D .875 .770 .062 .125 Straight-thru M4818 – SCG 875 1345 SRP 875-770 1352 2509 DD 875-770
Pigtail M4918 – SCG 875-7
.250 .485 Double D 1.093 .970 .062 .125 Straight-thru M4832 – RSCG 1093 1338 SRP 1093-970 1352 2723 DP 1093 *
Pigtail M4932 – RSCG 1093-7
1.125 1.000 .062 .125 Straight-thru M4838 – RSCG 1125 1348 SRP 1130-1005 1353 2717 DD 1109-1000
.260 .546 Double D 1.000 .875 .062 .125 Straight-thru M4824 – SCG 1000 1336 SRP 1000-875 1352 2713 DP 1000 *
Pigtail M4924 – SCG 1000-7

Lockit™ Strain Reliefs – RDD
Both .000 .600 Square .875 .875 .032 .100 Straight-thru 1266 – SR 8R-200 .875 x .875 split panel or U-slot consult Heyco Split Panel style SR – no Assembly Equipment required
Round .420 .450 Double D .875 .770 .032 .156 Straight-thru 1865 1866 RDD 401 1345 SRP 875-770 1352 2509 DD 875-770 0027 n/a ST17 ST19 ST18 consult Heyco
.078 .140 Straight-thru 1882 1883 RDD 401-2
.525 .600 Double D 1.109 1.000 .062 .187 Straight-thru 1868 1869 RDD 501 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST20 ST27 ST26

Lockit™ Strain Reliefs – Ratchet
Both .115 .575 Double D .875 .770 .062 .125 Straight-thru 1280 1281 RSR 875 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required

Original Strain Reliefs
Flat .200 x .370 .240 x .510 Elongated .750 .875 .062 .125 Straight-thru 1504 1505 SR 33-1 .750 x .875 elongated hole consult Heyco 0022 0197
Right Angle 1454 1455 SR 23-1
Round .525 .600 Double D .875 .840 .032 .062 Straight-thru 1254 1255 SR 8N-2 1346 SRP 875-840 1352 2509 DD 875-770 0028 0193
.063 .125 Straight-thru 1260 1261 SR 8P-2 1346 SRP 875-840 1352 2509 DD 875-770 0022 0189
.126 .187 Straight-thru 1274 1275 SR 8L-1 1346 SRP 875-840 1352 n/a .187 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Flat .180 .640 Round .875 KO .032 .125 Straight-thru 3043 – 751 ROMEX CONNECTOR 1/2 KO 3997 KOS 1/2 Gray Zinc Die-cast parts – hand assembly only
Round .400 .630 Round .875 KO .032 .125 Right Angle 3030 – 561 3/8 90 ANGLE CONN

* For Round Mounting Holes only

WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .485 .709 Double D 1.093 .970 .062 .125 Straight-thru M4830 – SCG 1093 1338 SRP 1093-970 1352 2723 DP 1093 * Snap-in style SR – no Assembly Equipment required
Pigtail M4930 – SCG 1093-7
1.125 1.000 .062 .125 Straight-thru M4836 – SCG 1125 1348 SRP 1130-1005 1353 2717 DD 1109-1000
.490 .787 Double D 1.250 1.125 .062 .125 Straight-thru M4844 – RSCG 1250 1349 SRP 1250-1125 1353 2740 DP 1250 *
1.375 1.250 .062 .125 Straight-thru M4850 – RSCG 1375 consult Heyco 2753 DP 1375 *
.590 .920 Double D 1.250 1.125 .062 .125 Straight-thru M4842 – SCG 1250 1349 SRP 1250-1125 1353 2740 DP 1250 *
1.000 Double D 1.375 1.250 .062 .125 Straight-thru M4848 – SCG 1375 consult Heyco 2753 DP 1375 *
.787 1.020 Double D 1.500 1.375 .062 .125 Straight-thru M4856 – RSCG 1500 consult Heyco 2763 DP 1500 *
1.750 1.625 .062 .125 Straight-thru M4862 – RSCG 1750 consult Heyco 2773 DP 1750 *
.865 1.180 Double D 1.500 1.375 .062 .125 Straight-thru M4854 – SCG 1500 consult Heyco 2763 DP 1500 *
1.000 1.240 Double D 2.000 1.875 .062 .125 Straight-thru M4868 – RSCG 2000 consult Heyco 2959 DD 2000-1875
.865 1.260 Double D 1.750 1.625 .062 .125 Straight-thru M4860 – SCG 1750 consult Heyco 2773 DP 1750 *
1.160 1.350 Double D 2.375 2.250 .062 .125 Straight-thru M4874 – RSCG 2375 consult Heyco consult Heyco
1.230 1.560 Double D 2.000 1.875 .062 .125 Straight-thru M4866 – SCG 2000 consult Heyco 2959 DD 2000-1875
1.450 1.560 Double D 2.375 2.250 .062 .125 Straight-thru M4872 – SCG 2375 consult Heyco consult Heyco

Lockit™ Strain Reliefs – RDD
Round .600 .700 Double D 1.109 1.000 .062 .187 Straight-thru 1802 1803 RDD 601 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST31 ST34
.720 .830 Double D 1.250 1.125 .062 .187 Straight-thru 1880 1881 RDD 701 1349 SRP 1250-1125 1353 2717 DD 1109-1000 consult Heyco n/a ST35 consult Heyco

Lockit™ Strain Reliefs – Ratchet
Both .115 .750 Double D .875 .770 .062 .125 Straight-thru 1282 1283 RSR 1109 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required

Original Strain Reliefs
Both .320 .650 Double D .875 .840 .062 .125 Straight-thru 1497 1498 SR 31-2 1346 SRP 875-840 1352 2509 DD 875-770 0022 0189
Flat .240 x .420 .290 x .650 Double D .875 .840 .062 .125 Straight-thru 1517 1518 SR 34-2
Right Angle 1464 1465 SR 24-1
.320 .660 Double D 1.093 1.000 .062 .125 Right Angle 1440 1441 SR 21-2 1347 SRP 1093-1000 1352 2723 DP 1093 * 0030 n/a
Round .600 .700 Double D 1.093 1.000 .125 .281 Straight-thru 1287 1288 SR 9P-2 1347 SRP 1093-1000 1352 n/a .281 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Round .650 .970 Round .875 KO .032 .125 Right Angle 3031 – 563 1/2 90 ANGLE CONNECTOR 1/2 KO 3997 KOS 1/2 Gray hand assembly only
WILL FIT THESE CABLES PANEL DIMENSIONS STRAIN RELIEF MOUNTING HOLE PUNCH CORRESPONDING MOUNTING HOLE PLUG ASSEMBLY EQUIPMENT
Profile Actual Diameter
or Height x Width
Range		 MOUNTING HOLE THICKNESS
RANGE		 STYLE (1) PART NO. DESCRIPTION PART NO. Description Puller Hand Pliers Air Tool For Heyco® Lockit™ Strain Reliefs Only
SHAPE SIZE. Black White PART
NO.		 Description Headlock Footlock Autolock Eurolock
Diameter Flats Min. Max
Min. Max. or Width or Length

Snap-in Cordgrip Strain Reliefs
Round .485 .709 Double D 1.093 .970 .062 .125 Straight-thru M4830 – SCG 1093 1338 SRP 1093-970 1352 2723 DP 1093 * Snap-in style SR – no Assembly Equipment required
Pigtail M4930 – SCG 1093-7
1.125 1.000 .062 .125 Straight-thru M4836 – SCG 1125 1348 SRP 1130-1005 1353 2717 DD 1109-1000
.490 .787 Double D 1.250 1.125 .062 .125 Straight-thru M4844 – RSCG 1250 1349 SRP 1250-1125 1353 2740 DP 1250 *
1.375 1.250 .062 .125 Straight-thru M4850 – RSCG 1375 consult Heyco 2753 DP 1375 *
.590 .920 Double D 1.250 1.125 .062 .125 Straight-thru M4842 – SCG 1250 1349 SRP 1250-1125 1353 2740 DP 1250 *
1.000 Double D 1.375 1.250 .062 .125 Straight-thru M4848 – SCG 1375 consult Heyco 2753 DP 1375 *
.787 1.020 Double D 1.500 1.375 .062 .125 Straight-thru M4856 – RSCG 1500 consult Heyco 2763 DP 1500 *
1.750 1.625 .062 .125 Straight-thru M4862 – RSCG 1750 consult Heyco 2773 DP 1750 *
.865 1.180 Double D 1.500 1.375 .062 .125 Straight-thru M4854 – SCG 1500 consult Heyco 2763 DP 1500 *
1.000 1.240 Double D 2.000 1.875 .062 .125 Straight-thru M4868 – RSCG 2000 consult Heyco 2959 DD 2000-1875
.865 1.260 Double D 1.750 1.625 .062 .125 Straight-thru M4860 – SCG 1750 consult Heyco 2773 DP 1750 *
1.160 1.350 Double D 2.375 2.250 .062 .125 Straight-thru M4874 – RSCG 2375 consult Heyco consult Heyco
1.230 1.560 Double D 2.000 1.875 .062 .125 Straight-thru M4866 – SCG 2000 consult Heyco 2959 DD 2000-1875
1.450 1.560 Double D 2.375 2.250 .062 .125 Straight-thru M4872 – SCG 2375 consult Heyco consult Heyco

Lockit™ Strain Reliefs – RDD
Round .600 .700 Double D 1.109 1.000 .062 .187 Straight-thru 1802 1803 RDD 601 1343 SRP 1109-1000 1353 2717 DD 1109-1000 consult Heyco n/a ST31 ST34
.720 .830 Double D 1.250 1.125 .062 .187 Straight-thru 1880 1881 RDD 701 1349 SRP 1250-1125 1353 2717 DD 1109-1000 consult Heyco n/a ST35 consult Heyco

Lockit™ Strain Reliefs – Ratchet
Both .115 .750 Double D .875 .770 .062 .125 Straight-thru 1282 1283 RSR 1109 1345 SRP 875-770 1352 2509 DD 875-770 Snap-in style SR – no Assembly Equipment required

Original Strain Reliefs
Both .320 .650 Double D .875 .840 .062 .125 Straight-thru 1497 1498 SR 31-2 1346 SRP 875-840 1352 2509 DD 875-770 0022 0189
Flat .240 x .420 .290 x .650 Double D .875 .840 .062 .125 Straight-thru 1517 1518 SR 34-2
Right Angle 1464 1465 SR 24-1
.320 .660 Double D 1.093 1.000 .062 .125 Right Angle 1440 1441 SR 21-2 1347 SRP 1093-1000 1352 2723 DP 1093 * 0030 n/a
Round .600 .700 Double D 1.093 1.000 .125 .281 Straight-thru 1287 1288 SR 9P-2 1347 SRP 1093-1000 1352 n/a .281 thk panel

Zinc Die-cast Strain Reliefs

Zinc
Round .650 .970 Round .875 KO .032 .125 Right Angle 3031 – 563 1/2 90 ANGLE CONNECTOR 1/2 KO 3997 KOS 1/2 Gray hand assembly only

* For Round Mounting Holes only

 
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