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 5855-00-149-0766
NSN 6685-01-648-2179
NSN 5998-01-594-3239
NSN 5950-01-167-8862
NSN 5990-01-261-2962
NSN 6610-01-418-5787
NSN 5925-01-392-9977
NSN 6130-00-381-1927
NSN 5996-01-578-8491
NSN 6610-01-641-8847
NSN 5915-00-249-1641
NSN 5960-01-438-0245