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 6145-01-559-9708
NSN 5945-00-339-2755
NSN 6110-01-138-9916
NSN 6130-01-466-5248
NSN 5990-00-212-4316
NSN 5935-01-144-4559
NSN 6240-01-160-8975
NSN 6645-01-062-0905
NSN 6150-01-507-0716
NSN 5998-01-334-9699
NSN 5985-00-826-8450
NSN 6620-00-460-2909