Boss on small diameter 0.125 in. Long
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 5910-01-217-1636
NSN 5855-00-116-6621
NSN 5910-01-062-7353
NSN 5910-01-422-3721
NSN 5920-00-288-5849
NSN 5935-00-597-3610
NSN 6150-01-608-4296
NSN 5965-01-109-2917
NSN 5915-01-411-9366
NSN 6220-01-421-5303
NSN 6645-01-499-7385
NSN 2925-01-532-8445