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 5855-01-330-3669
NSN 5920-00-983-3571
NSN 4140-01-268-2184
NSN 6105-01-327-5144
NSN 5985-00-125-7642
NSN 5990-01-360-2900
NSN 5835-01-560-3486
NSN 6105-01-654-9707
NSN 5935-01-330-2383
NSN 6240-01-050-9156
NSN 2925-01-068-3262
NSN 5915-00-729-0287