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 5965-00-512-1298
NSN 5975-01-106-2238
NSN 2925-01-407-3437
NSN 5835-01-341-1757
NSN 6240-01-512-1856
NSN 6220-00-357-1855
NSN 6685-01-579-6971
NSN 5990-01-074-5562
NSN 7035-01-334-5855
NSN 5915-01-491-6280
NSN 6220-01-563-4444
NSN 5975-01-444-2406