Heyco Strain Reliefs Snap-In Universal Strain Relief Bushings

Material: Nylon 6/6

Certifications:

File E15331 [for round, flat (SPT Cable Types)]

File E103540

File 81067

Flammability Rating: 94V-2

Material Temperature Index: 125°C (257°F)–Max. temperature on part not to exceed 105°C (221°F)

 
For European Requirements:

Designed to meet those requirements wherein the Strain Relief device must remain attached to the panel during cable removal or replacement.

  • USR 400 and USR 40 fit 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.
  • Nylon USR-400 & 401 comply with:
    • IEC Publication #335,
    • CEE #10 and #11.
  • Easy installation. Fingertip pressure locks bushing into .875" (22,2 mm) holes with panel thicknesses up to .125" (3,2 mm).
  • Reinforcing ribs provide extra strength.
  • Bell-mouth contour, radiused at 1.5 times the exit hole diameter, eliminates the need for a separate cord guard.
  • Protects cable against forces of pull, push, twist and flex.
  • Fill blank/unused mounting holes with Heyco Double D Plugs.
Heyco® Snap-In Universal Strain Relief Bushings
Fits 1/2" Electrical Knock-Out Holes
Will Fit These Cables Panel Dimensions Part
Number		 Description Screw
Type
Cross Section Approximate Size A
Mounting
Hole Diameter		 B
To Prevent
Rotation
 Panel
Thickness
in. mm. in. mm. in. mm. in. mm. Black
Round or Flat up to .40 up to 10,2 .875 22,2 .770 19,6 .062
.125		 1,6
3,2		 1724 USR-400 Nylon
1730 USR-40 Steel
Heyco® Snap-In Romex® Strain Relief Bushing
Fits 1/2" Electrical Knock-Out Holes
Will Fit These Cables Panel Dimensions Part
Number		 Description Screw
Type
Romex
Type		 AWG /
Conds.		 Approximate Size A
Mounting
Hole Diameter		 B
To Prevent
Rotation
 Panel
Thickness
in. mm. in. mm. in. mm. in. mm. Black
NM-B 14/2, 14,3
12/2, 12/3
10,2		 up to
.25 x .40		 up to
6,4 x 10,2		 .875 22,2 .770 19,6 .062
.125		 1,6
3,2		 1726 USR-401 Nylon