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 6645-01-028-2186
NSN 5925-01-527-1636
NSN 5985-01-327-9821
NSN 5920-01-401-5315
NSN 2925-01-118-6125
NSN 6650-00-367-9230
NSN 5905-01-231-4267
NSN 6240-01-371-3020
NSN 2925-01-236-0015
NSN 5945-01-191-8423
NSN 6320-01-449-1014
NSN 5915-01-395-6367