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 6110-00-469-7981
NSN 4140-01-304-3792
NSN 6610-00-448-0341
NSN 5835-00-537-7780
NSN 6105-01-200-7271
NSN 5925-01-524-7485
NSN 6110-00-494-3056
NSN 5965-01-557-4854
NSN 5925-00-420-1386
NSN 5999-01-308-4607
NSN 5910-00-672-4948
NSN 5835-01-247-2634