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Heyco® Straight-Thru Strain Relief Bushings 
Heyco® Straight-Thru Strain Relief Bushings Component Program of Underwriters Recognized under the Component Program of Underwriters' Laboratories File #E-15331
Canadian Standards Association Certified by Canadian Standards Association File #LR-8919
 

For flat cables, with flex-protecting internal radii
 
Swipe
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
 
Swipe
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</