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 6145-01-572-2510
NSN 5935-01-556-7466
NSN 5945-01-075-2715
NSN 6685-00-133-2288
NSN 5925-00-404-9035
NSN 6685-01-353-6635
NSN 6110-01-145-2469
NSN 5905-01-055-5299
NSN 5910-01-270-9130
NSN 5965-01-233-2759
NSN 6110-01-528-8417
NSN 6685-01-152-2846