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Heyco® Original Strain Relief Bushings

Pigtail with Integral Nylon Spring, for Flat and Round Cables

  • Part Numbers and Specifications
  • Features
WILL FIT THESE CABLES PANEL DIMENSIONS PART NO. DESC. PART DIMENSIONS Mounting
Hole
Plug
CAD
UL
Type
AWG/
Conductors
Approximate
Size
A
Mounting
Hole Dia.
B
To Prevent
Rotation
Finished
Fit Panel
Thickness*
Black C
HEAD
LENGTH
D
BODY
LENGTH
in. mm. in. mm. in. mm. in. mm. in. mm. in. mm. PART NO.

For Flat Cables

SPT-1 18/3 .12x.30 3,0x7,6 .500 12,7 .465 11,8 .062 1,6 1541 SR 4N-7 1.718 43,6 1.984 50,4 2491 CAD
SPT-2
& HPN
18/2 .15x.28 3,8x7,1

For Round Cables

SV & SVT 18/2 .250 6,4 .500 12,7 .450 11,4 .062 1,6 1590 SR 5N-7 1.703 43,3 1.984 50,4 2491 CAD
18/3 .255 6,5 .500-.515 12,7-13,1
HPD 18/2 .270 6,9 .500 12,7
16/2 .290 7,4 .500-.515 12,7-13,1
Same as SR 5N-7 above except –––––––––––––––––––––––––––––––––––––––––––>
.125 3,2 1593 SR 5P-7 1.703 43,3 1.984 50,4 2491 CAD
SJ, SJO & SJT 18/2 .300 7,6 .625 15,9 .550 14,0 .062 1,6 1596 SR 6N-7 1.718 43,6 2.109 53,6 2497 CAD
Same as SR 6N-7 above except –––––––––––––––––––––––––––––––––––––––––––>
.125 3,2 1602 SR 6P-7 1.718 43,6 2.109 53,6 2497 CAD
SJ, SJO
& SJT
16/2 .315 8,0 .625 15,9 .550 14,0 .062 1,6 1599 SR 6N3-7 1.718 43,6 2.109 53,6 2497 CAD
18/3 .320 8,1
14/2 .350 8,9
16/3 .355 9,0
18/4 .360 9,1
Same as SR 6N3-7 above except –––––––––––––––––––––––––––––––––––––––––––>
.125 3,2 1605 SR 6P3-7 1.718 43,6 2.109 53,6 2497 CAD
1604 SR 6P3-7S**
SJT 18/4 .360 9,1 .750 19,0 .660 16,8 .125 3,2 1611 SR 7P-7 2.156 54,9 2.598 66,0 2503 CAD
SJT & SJTO 14/3 .370 9,4
S & ST 18/2 .390 9,9
18/3 .405 10,3
16/2 .405 10,3
16/3 .430 10,9 .750-.781 19,0-19,8

Standard color black. Consult Heyco for white and other colors.
*Maximum Panel Thickness. Part has additional clearance. Consult Heyco for your Custom Finished Fit Panel Thickness.
**For use in split housings only: Larger locking step on body and key, for additional pull out resistance.

  • Integral nylon spring eases the cable into a lazy bend; prevents sharp bending and assures longest cable and product life.
  • Adds reliability, longevity, and safety. Will pass CSA's 50,000 cycle vacuum cleaner test (C22.2 No. 67).
  • Protects the lifeline of your electric/electronic products by absorbing the forces of pull, push, twist, and flex.
  • Securely anchors, insulates, and protects cables at panel entry points.
  • Not recommended for applications where the power supply cord is subject to whipping or jump rope type motion.
  • Corresponding Mounting Hole Plugs can be used to fill blank/unused Mounting Holes and thus allow for a single panel design for multiple applications.
  • Consult Heyco for other wire types and sizes.
  • For SR assembly tools, click here.
  • For Double D Mounting Hole Punches, click here.

QuickSpecs

Material   Nylon 6/6
Certifications ru Recognized under the Component Program of Underwriters' Laboratories File E15331
csa Certified by the Canadian Standards Association File 8919
Flammability Rating   94V-2
Temperature Range   -.04°F (-18°C) to 221°F (105°C)
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