Heyco® Snap-In Romex® Strain Relief Bushing

Fit 1/2″ Electrical Knock-out Hole

Specifications

Part number and specification

WILL FIT THESE CABLES				PANEL DIMENSIONS						PART NO.	DESCRIPTION	SCREW TYPE
Romex Type	AWG/ Conds	Approximate Size		A Mounting Hole Dia.		B To Prevent Rotation		Panel Thickness		Black
Romex Type	AWG/ Conds	in.	mm.	in.	mm.	in.	mm.	in.	mm.	Black
NM-B	14/2, 14/3, 12/2, 12/3, 10/2	up to .250 x .400	up to 6,4 x 10,2	.875	22,2	.770	19,6	.062	1,6	1726	USR-401	nylon
NM-B	14/2, 14/3, 12/2, 12/3, 10/2	up to .250 x .400	up to 6,4 x 10,2	.875	22,2	.770	19,6	.125	3,2	1726	USR-401	nylon

Standard color black. Consult Heyco for white and other colors.
*For Romex® and other flat cables.

USR 400 fits the widest range of cable sizes.
USR 401 fits the widest range of Romex® and other flat cable sizes.
Captive screw forces the locking flap against the cable.
Captive screw meets typical European requirements wherein the Strain Relief device must remain attached to the panel during cable removal or replacement.
Nylon USR 400 & 401 comply with:
– IEC Publication #335
– CEE #10 and # 11
Easy installation: fingertip pressure locks bushing into .875″ (22,2 mm) diameter holes with panel thickness up to .125″ (3,2 mm).
Reinforcing ribs for extra strength.
Bell mouth contour, radiused at 1.5x the exit hole diameter, eliminates the need for a separate cord guard.
Protect cables against forces of pull, push, twist, and flex.
Heyco-Tite Liquid Tight Romex Connectors.
For Double D Mounting Hole Punches, click here.

Material		Nylon 6/6
Certifications		Recognized File E15331 for round and flat SPT type cables
		Listed under Underwriters’ Laboratories File E103540
		Certified by the Canadian Standards Association File 81067
Flammability Rating		94V-2
Temperature Range		-.04°F (-18°C) to 221°F (105°C)

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