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 4140-00-832-3286
NSN 5965-01-561-3139
NSN 5915-01-281-6559
NSN 5996-00-866-9878
NSN 6135-01-464-2075
NSN 5965-01-238-3900
NSN 6130-01-160-6610
NSN 6620-01-472-6461
NSN 6685-00-162-2052
NSN 5998-00-937-4309
NSN 6110-00-934-7943
NSN 7035-01-369-1445