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Bushings and Plugs

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 round cables

Click on one of the green links below to download a CAD Drawing of this product.

UL TYPE Designation	AWG Conductors	Approx Cable Diameter	A Mounting Hole	B To Prevent Rotation	Maximum Thickness	PART NO.		UL/CSA Desc	D Part Length
		in. mm.	in. mm.	in. mm.	in. mm.	Black	White		in. mm.
SJ, SJT &SJO	16/2	.325 8,3	.875 22,2	.770 19,6	.125 3,2	1240	1241	SR 7K-2	3/4 19,0
	18/3	.330 6,4
	14/2	.350 8,9
	16/3	.355 9,0
	18/4	.360 9,1
SAME AS SR 7K-2 ABOVE EXCEPT ----->				SEE SCHEMATIC		1271	1272	SR 7KR-2
SJT	18/4	.360 9,1	.750 19,0	.660 16,8	.062 1,6	1244	1245	SR 7N-2
	14/3	.370 9,4
S & ST	18/2	.390 9,9
	18/3	.405 10,3
	16/2	.405 10,3
	16/3	.430 10,9	.750 19,0
			.781 19,8
SAME AS SR 7N-2 ABOVE EXCEPT ----->					.125 3,2	1237	1238	SR 7P-2
SJT	14/3	370 9,4	.875 22,2	.770 19.6	.125 3,2	1247	1248	SR7W-2
	12/3	.425 10,8
S & ST	18/2	.390 9,9
	18/3	.405 10,3
	16/2
SAME AS SR 7W-2 ABOVE EXCEPT ----->					200 5,1	1250	1251	SR 7L-2
SJT	12/3	.425 10,8 .475 12,1	.875 22,2	.840 21,3	.125 3,2	1497	1498	SR 31-2	13/16 20,6
S & ST	14/2	.530 13,5	.875 22,2	.840 21,3	.062 1,6	1254	1255	SR 8N-1	53/64 20,8
	14/3	.560 14,2
	12/2	.600 15,3
SAME AS SR 8N-1 ABOVE EXCEPT ----->					.125 3,2	1260	1261	SR 6P-2
					.187 4,8	1274	1275	SR 8L-1	13/16 20,6
S	12/2	.600 15,2	1.093 27,7	1.000 25,41.093 27,7	.281 7.1	1287	1288	SR 9P-2	1 25,4
	12/3	.635 16.1	1.125 28,6
	10/2	.640	16,3
S, ST & SO	10/3	.690 17,5	1.187 28,6

Standard Strain Relief Color: Black. White and other strain relief colors are available at extra charge (only in large quantities).

New Sizes for narrow nylon fastener of the size .062"(1,6mm) chassis available:
SR 7N-2
SR 8N-1
See chart forstrain relief details.
(Click here to see our guide on choosing the best strain relief for your application.)

Labkit No. 1 ( Part #1999)
Provides a working assortment for prototype strain relief and labatory use. 180 assorted Heyco Strain Relief fasteners are identified in a handy compartmentalized plastic box. Ideal nylon fastener strain reliever parts for design engineering groups.

Heyco® Straight-Thru Strain Relief Bushings