“Stay Connected with Heyco”
Strain Relief Bushings
Heyco Original Strain Relief Bushings
®
Bell-Mouth for Flat and Round Cables
•
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.
•
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.
WILL FIT THESE CABLES
UL Type
AWG/
Conductors
Approximate
Size
in.
mm.
PANEL DIMENSIONS
A
Mounting
Hole Dia.
in. mm.
PART
DESC
PART DIMENSIONS
Mounting
C
D
Hole Plug
HEAD
BODY
LENGTH LENGTH
in. mm. in. mm. PART NO.
B
Finished NO.
To Prevent Fit Panel Black
Rotation Thickness*
in. mm. in. mm.
For Flat Cables
CLOCK,
X & XT
SPT-2
SPT-1
SPT-1
SPT-2
& HPN
HPN
SPT-2
20/2
18/2
18/2
18/3
18/2
16/2
18/3
16/2
16/2
16/3
18/2
18/3
18/2
HPD
16/2
SJ & SJT
SJ, SJO
& SJT
SJ
18/2
18/2
16/2
18/3
14/2
16/2
18/3
14/2
16/3
18/4
.290
.300
.300
.315
.320
.320
.325
.330
.350
.355
.360
7,4
7,6
7,6
8,0
8,1
8,1
8,2
8,4
8,9
9,0
9,1
.09x.18
.11x.21
.12x.22
.12x.30
.15x.28
.16x.30
.15x.34
.16x.37
2,3x4,6
.375
2,8x5,3
3,0x5,6
3,0x7,6
3,8x7,1
4,1x7,6
3,8x8,6
4,1x9,4
.625
15,9
.550
14,0 .125
3,2
1229
SR 6K-5 .421 10,7 .813 20,7
2497
.500
.515
12,7
13,1
.437
.500
11,1
12,7
.465
11,8 .062
1,6
1108
SR 4N-5 .406 10,3 .703 17,9
2491
.390
9,9 .062
1,6
1080
SR 3P-5 .375
9,5 .625 15,9
2488
9,5
.330
8,4 .062
1,6
1020
SR 2P-5 .375
9,5 .625 15,9
consult Heyco
.16x.30 4,1x7,6
.16x.41 4,1x10,4
.250
.255
.270
6,3
6,5
6,9
For Round Cables
SV &
SVT
.500
.500-
.515
.500
.500-
.515
.531
.625
.625
12,7
12,7-
13,1
12,7
12,7-
13,1
13,5
15,9
15,9
.550 14,0 .125
.550 14,0 .125
3,2
1226
SR 6P-5
3,2
1232
SR 6P2-5 .421 10,7 .813 20,7
2497
.450 11,4 .062
1,6
1143
SR 5N-5 .406 10,3 .688 17,5
2491
SJ, SJO
& SJT
.625
15,9
.550 14,0 .062
1,6
1223
SR 6N3-5 .421 10,7 .813 20,7
2497
Same as SR 6N3-5 above except
.125
3,2
1220
SR 6P3-5 .421 10,7 .813 20,7
2497
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.
B
X
A
X
C
MOUNTING HOLE
D
Quick
Specs
4-23
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)
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