“Stay Connected”
with
®
Strain Relief Bushings
Heyco Original Strain Relief Bushings
®
Pigtail with Integral Nylon Spring, for Flat and Round Cables
WILL FIT THESE CABLES
UL Type
AWG/
Conductors
Approximate
Size
in.
mm.
3,0x7,6
3,8x7,1
.500 12,7
.465 11,8 .062
1,6
1541
SR 4N-7 1.718 43,6 1.984 50,4
2491
PANEL DIMENSIONS
PART
DESC
PART DIMENSIONS
Mounting
A
B
Finished NO.
Mounting To Prevent Fit Panel Black
Hole Dia. Rotation Thickness*
in. mm. in. mm. in. mm.
C
D
Hole Plug
HEAD
BODY
LENGTH
LENGTH
in. mm. in. mm. PART NO.
For Flat Cables
SPT-1
SPT-2
& HPN
18/3
18/2
.12x.30
.15x.28
For Round Cables
SV &
SVT
18/2
18/3
18/2
HPD
16/2
.290
7,4
.250
.255
.270
6,4
6,5
6,9
.500 12,7
.500- 12,7-
.515 13,1
.500 12,7
.500- 12,7-
.515 13,1
.125
7,6
.625 15,9
.550 14,0 .062
.125
8,0
8,1
8,9
9,0
9,1
3,2
1593
1,6
1596
3,2
1602
SR 5P-7
SR 6N-7
SR 6P-7
1.703 43,3 1.984 50,4
1.718 43,6 2.109 53,6
1.718 43,6 2.109 53,6
2491
2497
2497
.450 11,4 .062
1,6
1590
SR 5N-7
1.703 43,3 1.984 50,4
2491
Same as SR 5N-7 above except
SJ, SJO
& SJT
18/2
.300
Same as SR 6N-7 above except
SJ, SJO
& SJT
16/2
18/3
14/2
16/3
18/4
.315
.320
.350
.355
.360
.625 15,9
.550 14,0 .062
1,6
1599
SR 6N3-7 1.718 43,6 2.109 53,6
2497
•
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.
•
See page 4-38 for corresponding
Mounting Hole Plugs
which 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.
•
See pages 4-27 & 4-28 for SR
assembly tools.
•
For Double D Mounting Hole Punches,
see page 4-30.
Same as SR 6N3-7 above except
SJT
SJT & SJTO
18/4
14/3
18/2
18/3
16/2
16/3
.360
.370
.390
.405
.405
.430
9,1
9,4
9,9
10,3
10,3
10,9
.750 19,0
.125
3,2
1605
SR 6P3-7
1.718 43,6 2.109 53,6
2497
1604
SR 6P3-7S**
.660 16,8 .125
.750- 19,0-
.781 19,8
3,2
1611
SR 7P-7
2.156 54,9 2.598 66,0
2503
S & ST
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.
B
A
C
MOUNTING HOLE
D
Material
Certifications
Flammability Rating
Temperature Range
Nylon 6/6
Recognized under the Component Program of Underwriters’ Laboratories
File E15331
Certified by the Canadian Standards Association File 8919
94V-2
-.04°F (-18°C) to 221°F (105°C)
Quick
Specs
4-24
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