A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 6110-01-312-4402
NSN 6110-00-422-4973
NSN 5990-00-679-6157
NSN 6135-01-452-0562
NSN 5925-01-369-2816
NSN 6150-00-925-2465
NSN 5910-00-078-8248
NSN 6610-00-863-9319
NSN 6610-00-834-0713
NSN 5950-01-251-2433
NSN 6685-01-472-5540
NSN 5920-01-432-1155