Heyco® Straight-Thru Strain Relief Bushings
Recognized under the Component Program of Underwriters' Laboratories File #E-15331
Certified by Canadian Standards Association File #LR-8919
For flat cables, with flex-protecting internal radii
WILL FIT THESE CABLES
CHASSIS DIMENSIONS
UL/CSA
Desc
UL TYPE
Designation
AWG
Conductors
Approx
Size
A
Mounting
Hole
B
To Prevent
Rotation
Maximum
Thickness
PART NO.
D
Part
Length
in.
mm.
in. mm.
in. mm.
in. mm.
Black
White
in. mm.
SPT-1
18/3
.12x.30
3,0x7,6
.500 12,7
.465 11,8
.040 * 1,0
1181
1182
SR 4A-6
.546 13,9
SPT-2 & HPN
18/2
.15x.28
3,8x7,1
SAME AS SR 4A-6 ABOVE EXCEPT ----->
.062 1,6
1187
1188
SR 4N-6
.100 2,5
1190
1191
SR 4K-6
Standard Color: Black. White and others available at extra charge (only in large quantities).
* To install Strain Reliefs for .040"(1,0 mm) maximum chassis thickness, use Part #0021 (No. R-291) Hand Plier
For flat cables, with flex-protecting internal radii
WILL FIT THESE CABLES
CHASSIS DIMENSIONS
UL/CSA
Desc
UL TYPE
Designation
AWG
Conductors
Approx
Size
A
Mounting
Hole
B
To Prevent
Rotation
Maximum
Thickness
PART NO.
D
Part
Length
in.
mm.
in. mm.
in. mm.
in. mm.
Black
White
in. mm.
CLOCK
20/2
.09x.18
2,3x4,6
.375 9,5
.345 8,8
.062 1,6
1017
1018
SR 2P-4
.406 10,3
STP-1
18/2
.11x.21
2,8x5,3
SAME AS SR 3A-4 ABOVE EXCEPT ----->
.125 3,2
1034
1035
SR 2L-1
SPT-1
18/2
.12x.22
3,0x5,6
.437 11,1
.390 9,9
.040* 1,0
1074
1075
SR 3A-4
SAME AS SR 3A-4 ABOVE EXCEPT ----->
.062 1,6
1077
1078
SR 3P-4
.100 2,5
1104
1105
SR 3W-1
.156 4,0
1094
1095
SR 3L-1
SPT-1
18/2
.12x.22
3,0x5,6
.50 12,7
.445 11,3
.100 2,5
1130
1131
SR 4P-4
.453 11,5
SPT-1
18/3
.12x.30
3,0x7,6
.500 12,7
.465 11,8
.062 1,6
1120
1121
SR 4N-4
.406 10,3
HPN
18/2
.15x.28
3,8x7,1
SAME AS SR 4N-4 ABOVE EXCEPT ----->
.100 2,5
1117
1118
SR 4K-4
.156 4,0
1127
1128
SR 4L-4
SPT-1
18/3
.12x.30
3,0x7,6
.500 12,7
.450 11,7
.095 2,4
1114
1115
SR 4K-1
.50 12,7
SPT-2 & HPN
18/2
.15x.28
3,8x7,1
HPN
18/3
.15x.34
3,8x8,6
.50- 12,7
.515 13,1
SPT-2 & HPN
16/2
.16x.30
4,1x7,6
SAME AS 4K-1 ABOVE EXCEPT ----->
.187 4,7
1124
1125
SR 4L-1
SPT-3
18/2
.19x.35
4,8x8,9
562 14,3
.530 13,5
.062 13,5
1170
1171
SR 5KN-4
.609 15,5
16/2
.20x.37
5,1x9,4
SPT-2
18/3
.15x.40
3,8x10,2
16/3
.16x.41
4,1x10,4
SAME AS SR 5KN-4 ABOVE EXCEPT ----->
.125 3,2
1167
1168
SR 5K-4
SPT-2
18/3
.15x.40
3,0x7,6
.625 15,9
.550 14,0
.062 1,6
1160
1161
SR 6N-4
.406 10,3
16/3
.16x.41
4,1x10,4
SAME AS 6N-4 ABOVE EXCEPT ----->
.125 2,5
1163
1164
SR 6PN-4
Standard Nylon Fastener Color: Black. White and others available at extra charge (only in large quantities).
* To install Strain Reliefs for .040"(1,0 mm) maximum chassis thickness, use Part #0021 (No. R-291) Hand Plier
Protects the lifeline of your electric/electronic products by absorbing the forces of pull, push and twist that may be exerted on the flexible power cord.
Securely anchors, insulates and protects cables at chassis entry points.
New sizes for narrow .040" (1,0mm) chassis available:
SR 3A-4
SR 4A-6
See charts for details.
Standardize panel design! Fill unneeded SR mounting holes with Heyco Double D Plugs, page 3-17.
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