Kadee #5 HO Scale, Universal Metal Couplers with Gearboxes, Medium Centerset Shank

The one that started it all; the original No.5®. These industry leading couplers feature an all metal construction, standard centering springs, and come complete with insulated draft gearboxes and lids. This is the perfect upgrade for the weak and drooping couplers that come on most factory rolling stock and locomotives. Others have tried to copy the robust design of the No.5® but nothing comes close to the real thing. Our classic #5 couplers are manufactured to the strictest tolerances to ensure reliable operation for decades. And they're still made right here in the USA with legendary Made In America quality. The No.5® is interchangeable with the #28, #58, #118, #119, #148, #158, and most manufacturer's Medium Centerset OEM knuckle couplers. Package Includes: (2) Pair No.5® Metal Couplers - Medium Centerset Shank (2) Pair #634 Centering Spring NO.5® Style (2) Pair 232 Gearboxes (2) Spare #622 Knuckle Springs It is not recommended to use a metal coupler directly on a metal surface or in a metal draft gearbox to avoid possible electrical crossover and shorting that may cause damage. For insulated couplers use #28 coupler.  No.5® Coupler Specifications Shank Length Medium - 9/32" (center of mounting hole to back of coupler head) Shank Offset Centerset Mounting Height 29/64" Centerline 25/64" Trip Pin Height 1/32" Head Style Standard Centering Spring #634 Knuckle Spring #622 Shank Material Metal Knuckle Material Metal Color Black Compatible Gearboxes #213, #232, #234, #242, Most manufacturer molded-on gearboxes* #232 Gearboxes & Lids Specifications Material Insulated Plastic Dimensions 29/64" L x 19/64" W x 7/64" H Center Hole 2-56 Insulated Screws Side Holes 0-48 Self-Tapping or 0-80 Machine Screws Color Black Compatible Couplers No.5®, #21, #22, #23, #24, #25, #26, #27, #28, #29, #58, #118, #119, #141, #142, #143, #144, #145, #146, #147, #148, #149, #153, #156, #158  *Note: Some manufacturers now produce models with non-industry standard coupler pockets (molded-on gearbox). These shallower coupler pockets may require slight modification to the gearbox or coupler to function properly. If the model has a shallow molded-on gearbox, a #148 Whisker® coupler should be used instead of a No.5® coupler. The top of the #148 Whisker® coupler shank may be filed thinner to fit the shallower cast-on coupler pockets.