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Heyco-Flex™ III Liquid Tight Fittings Features

Straight Through, NPT Hubs

  • Resists salt water, weak aciods, gasoline, alcohol, oil, grease and common solvents. This feature is not assessed by UL certification or testing.
  • Easy, permanent assembly between the tubing and fittings: push the tubing over the fitting ferrule until the tubing “clicks” into place
  • No threading of the conduit or tubing required to install. This eliminates the possiblity of cutting the conduit and creating leak paths.
  • Flame retardant, won’t burn
  • Non toxic and UV resistant
  • Locknuts included with connectors
  • For use in both wet and dry applications
  • Lightweight and lower installed cost
  • Suitable for use in high vibration or flexing applications (automotive equipment, fiber optics, computer and peripherals, lab equipment, robotics, etc.)
  • Quick and easy installation.

Material 6/6 Nylon
Certifications Listed under Underwriters Laboratories File #E121095
Flammability Rating 94V-2
Material Temperature Index 257F° (125°C)-Maximum temperature on part not to exceed 221°F (105°C)
Ingress Protection
Heyco-Flex™ III Liquid Tight Fittings Specifications
Trade Size Part No. Black Description Thread Size Part Dimensions CAD
A B C D E
Clearance Hole Max O.A. Length Thread Length Wrenching Nut Thickness Wrenching Flats
in. mm. in. mm. in. mm. in. mm. in. mm.
3/8 9146 HF3C 3/8 1/2 NPT .875 22,3 1.095 27,8 .63 16,0 .20 5,1 1.16 29,7
1/2 9147 HF3C 1/2 1/2 NPT .875 22,3 1.72 43,7 .63 16,0 .20 5,1 1.16 30,0
3/4 9148 HF3C 3/4 3/4 NPT 1.11 28,2 1.84 46,7 .63 16,0 .20 5,1 1.37 34,8
1 9149 HF3C 1 1 NPT 1.375 35,0 1.215 30,9 .78 19,8 .20 5,1 1.59 41,0





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