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Heyco® Original Strain Relief Bushings

Bell-Mouth 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

CLOCK
X & XT
20/2 .09x.18 2,3x4,6 .375 9,5 .330 8,4 .062 1,6 1020 SR 2P-5 .375 9,5 .625 15,9 consult Heyco CAD
SPT-2 18/2 .11x.21 2,8x5,3
SPT-1 18/2 .12x.22 3,0x5,6 .437 11,1 .390 9,9 .062 1,6 1080 SR 3P-5 .375 9,5 .625 15,9 2488 CAD
SPT-1 18/3 .12x.30 3,0x7,6 .500 12,7 .465 11,8 .062 1,6 1108 SR 4N-5 .406 10,3 .703 17,9 2491 CAD
SPT-2
& HPN
18/2 .15x.28 3,8x7,1
16/2 .16x.30 4,1x7,6 .500-.515 12,7-13,1
HPN 18/3 .15x.34 3,8x8,6 .625 15,9 .550 14,0 .125 3,2 1229 SR 6K-5 .421 10,7 .813 20,7 2497 CAD
16/3 .16x.37 4,1x9,4
SPT-2 16/2 .16x.30 4,1x7,6
16/3 .16x.41 4,1x10,4

For Round Cables

SV &
SVT
18/2 .250 6,3 .500 12,7 .450 11,4 .062 1,6 1143 SR 5N-5 .406 10,3 .688 17,5 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
SJ & SJT 18/2 .300 7,6 .531 13,5
SJ, SJO
& SJT
18/2 .300 7,6 .625 15,9 .550 14,0 .125 3,2 1226 SR 6P-5 .421 10,7 .813 20,7 2497 CAD
16/2 .315 8,0 .625 15,9 .550 14,0 .125 3,2 1232 SR 6P2-5 CAD
18/3 .320 8,1
SJ 14/2 .320 8,1
SJ, SJO
& SJT
16/2 .325 8,2 .625 15,9 .550 14,0 .062 1,6 1223 SR 6N3-5 .421 10,7 .813 20,7 2497 CAD
18/3 .330 8,4
14/2 .350 8,9
16/3 .355 9,0
18/4 .360 9,1
Same as SR 6N3-5 above except –––––––––––––––––––––––––––––––––––––––––––>
.125 3,2 1220 SR 6P3-5 .421 10,7 .813 20,7 2497 CAD

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.

  • Flared trumpet exit eases the cable into a lazy bend, prevents sharp bending, and assures longer cable and product life.
  • Protects the lifeline of your electric/electronic products by absorbing the forces of pull, push, twist, and flex.
  • Securely anchors, insulates, and protects cable at panel entry points.
  • 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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