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 6220-00-295-3594
NSN 6130-00-044-4281
NSN 2925-01-572-0539
NSN 5998-01-473-7724
NSN 5925-00-257-7072
NSN 6240-01-232-4408
NSN 6150-00-245-2149
NSN 6685-00-064-2031
NSN 5996-01-239-3928
NSN 6650-00-287-5868
NSN 5930-00-093-1404
NSN 5905-01-105-8016