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 6130-01-411-7735
NSN 5855-01-630-5790
NSN 6110-00-247-0211
NSN 5990-01-258-3848
NSN 6110-00-589-3134
NSN 6150-01-268-3144
NSN 5920-01-510-9921
NSN 6645-00-183-8812
NSN 5999-01-376-5601
NSN 6220-01-548-8660
NSN 5965-01-545-8562
NSN 6320-00-433-2773