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 6105-01-344-1359
NSN 6110-01-418-7761
NSN 5855-01-350-5540
NSN 5910-00-879-1292
NSN 5925-01-476-5666
NSN 5985-01-288-0623
NSN 5910-01-367-9839
NSN 6130-01-045-7113
NSN 6620-01-106-3553
NSN 6135-00-840-6451
NSN 5895-00-276-7916
NSN 6650-00-292-9106