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 5895-00-226-6901
NSN 6320-00-228-5678
NSN 2925-00-549-6759
NSN 6110-01-477-9911
NSN 5910-01-548-8432
NSN 5905-01-365-2383
NSN 5998-00-424-9174
NSN 6135-00-112-8637
NSN 6130-01-583-5577
NSN 6320-01-436-9228
NSN 6650-01-571-7122
NSN 6645-01-499-4798