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 6240-01-349-8766
NSN 5950-00-228-4996
NSN 5855-01-541-1361
NSN 5950-01-048-3694
NSN 6610-01-337-4640
NSN 5855-01-570-0989
NSN 5910-00-118-9988
NSN 5996-01-141-6916
NSN 5975-01-599-9930
NSN 5950-00-597-3661
NSN 6650-00-273-8732
NSN 6685-01-571-7743