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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 thisstrain relief 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
UL TYPE Designation	AWG Conductors	in. mm.	in. mm.	in. mm.	in. mm.	Black	White	UL/CSA Desc	in. mm.
AWM	-	.125- 3,2 .187 4,8	.375 9,5	.330 8,4	.062 1,6	1060	1061	SR 2M-1	12/32 10,3
SW & SVT	18/2	.220- 5,6 .245 6,2	.500 12,7	.450 11,4	.062 1,6	1157	1158	SR 5MN-3	7/16 11,1
SAME AS SR 5MN-3 ABOVE EXCEPT ----->					.100 2,5	1140	1141	SR 5M-3
SV & SVT	18/2	.250 6,4	.500 12,7	.450 11,4	.062 1,6	1150	1151	SR 5N-4
	18/3	.255 6,5	.500- 12,7 .515 13,1
HPD	18/2	.270 6,9	.500- 12,7 .515 13,1
SAME AS SR 5N-4 ABOVE EXCEPT ----->					.100 2,5	1147	1148	SR 5P-4
SAME AS SR 5N-4 ABOVE EXCEPT ----->					.156 4,0	1154	1155	SR 5L-1
SV & SVT	18/3	.255 6,5	.500 12,7	.450 11,4	.100 2,5	1137	1138	SR 5P3-4
HPD	16/2	.290 7,4	.500 12,7	.450 11,4	.100 2,5	1137	1138	SR 5P3-4
SJ, SJT & SJO	18/2	.300 7,6	.500 12,7	.465 11,8	.090 2,3	1184	1185	SR 6W-1
SJ, SJT & SJO	18/2	.300 7,6	.625 15,9	.550 14,0	.062 1,6	1217	1218	SR 6N-4	37/64 14.7
SAME AS SR 6N-4 ABOVE EXCEPT ----->					.125 3,2	1210	1211	SR6P-4
SJ, SJT & SJO	16/2	.325 8,3	.625 15,9	.550 14,0	.062 1,6	1200	1201	SR 6N3-4
	18/3	.330 8,4
	14/2	.350 8,9
	16/3	.355 9,0
	18/4	.360 9,1
SAME AS SR 6N3-4 ABOVE EXCEPT ----->					.125 3,2	1207	1208	SR 6P3-4
SJ, SJT & SJO	18/2	.300 7,6	.625 15,9	.550 14,0	.156 4,0	1214	1215	SR 6L-1	11/16 17,5
	16/2	.325 8,3	.656 16,7
	18/3	.330 8,4
	16/3	.355 9,0	.687 17.4

Standard Strain Relief Fastener Color: Black. White and other Strain Relief Fastener Colors are available at extra charge (only in large quantities).
*AWM Cable only.

These Strain Reliefs standardize panel design! Fill unneeded SR mounting holes with Heyco Double D Plugs, page 3-17.
(Click here to see our guide on choosing the best strain relief for your application.)

Labkit No. 1 (Part #1999)
These strain reliefs provide a working assortment for prototype strain relief and laboratory use. 180 assorted Heyco strain reliefs are identified in a handy compartmentalized plastic box. Ideal nylon fastener for design engineering groups.

Labkit No. 1

Heyco T-Bar

PART NO. 3791 strain reliefs, available in black color only.
During cable removal or replacement, the T-Bar strain relief prevents complete removal of the strain relief bushing from the chassis, reducing the risk of losing the bushing.
Strain reliefs not for use in any mounting hole greater than .625" (16,0mm) in diameter.
Snap T-Bar fastener onto the strain relief bushing strap (linking body to key piece), then feed it into the chassis mounting hole.
These fasteners are molded of type 6/6 nylon. ASTM D-4066; flammability classification 94V-2; temperature index 125°C. Maximum temperature on the fastener shall not exceed 105°C.