Heyco® Straight-Thru Strain Relief Bushings For Flat Cables Features Sizes SR 2 to SR6 for mounting hole diameters from .375˝ (9.5 mm) to .625˝ (15,9 mm). Protects the lifeline of your electric/electronic products by absorbing the forces of pull, push and twist that maybe exerted on the flexible power cord. Securely anchors, insulates, and protects cables and panel entry points. Standardize panel design! Fill unneeded SR mounting holes with Heyco Double “D” Plugs. SR hole punches and assembly tools.

Material 6/6 Nylon Certifications Recognized under the Component Program of Underwriters’ Laboratories File E15331 Certified by the Canadian Standards Association File LR8919 Flammability 94V-2 Temperature 257°F (125°C)–Maximum temperature on part not to exceed 221°F (105°C)

Heyco® Straight-Thru Strain Relief Bushings For Flat Cables Specifications WILL FIT THESE CABLES PANEL DIMENSIONS PART NO. Black Descript. C Body Length CAD UL Type Design. AWG/ Conduc. Approximate Size A Mount. Hole Dia. B Prevent Rotation Max. Panel Thickness in. mm. in. mm. in. mm. in. mm. in. mm. HPN & SPT-2 16/3 18/3 16/3 .16x.37 .15x.40 .16x.41 4,1x9,4 3,8x10,2 4,1x10,4 .562 14,3 .530 13,5 .125 3,2 1174 SR 5W-1 .609 15,5 SPT-2 18/3 16/3 .15x.40 .16x.41 3,8x10,2 4,1x10,4 .560* 14,2 .730* 18,5 .125 3,2 1484 SR 30-1* .672 17,1 SPT-3 18/2 18/3 16/2 16/3 .19x.35. .19x.39 .20x.37 .20x.43 4,8x8,9 4,8x9,9 5,1x9,4 5,1x10,9 SPT-2 18/3 16/3 .15x.40 .16x.41 3,0x7,6 4,1x10,4 .625 15,9 .550 14,0 .062 1,6 1160 SR 6N4-4 .578 14,7 Same as SR 6N4-4 above except .125 2,5 1163 SR 6P4-4 .578 14,7 SPT-3 16/2 16/3 14/2 14/3 .20x.37 .20x.43 .24x.42 .24x.51 5,1x9,4 5,1x10,9 6,1x10,7 6,1x12,9 .750* 19,0 .875* 22,2 .125 3,2 1504 SR 33-1* .781 19,8 SPT-3 14/2 14/3 12/2 12/3 .24x.42 .24x.51 .29x.51 .29x.65 6,1x10,7 6,1x12,9 7,4x12,9 7,4x16,5 .875 22,2 .840 21,3 .125 3,2 1517 SR 34-2 .813 20,7 SPT-3 12/3 10/3 .32x.65 8,1x16,5 .835 21,2 .840 21,3 .125 3,2 1497 SR 31-2 .812 20,6 300 OHM= .06x.40 1,5x10,2 .375 9,5 .625-.640* 15,9-16,3 .156 4,0 1804 SR 300-1* .469 11,9 SPT-1 18/3 .12x.30 3,0x7,6 .375 .390 9,5 9,9 SPT-2 18/3 .15x.40 3,8x10,2 .415 .422 10,5 10,7 16/3 .16x.41 4,1x10,4 .422 .437 10,7 11,1 Same as SR 300-1 above except .100 2,5 1814 SR 302-1* .469 11,9 Standard color black. Consult Heyco for white and other colors. = Wire is not UL/CSA covered. *Use Elongated Hole. 1 Maximum Panel Thickness–Part has additional clearance.