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 2925-01-015-9170
NSN 5975-01-314-0650
NSN 5895-01-531-5297
NSN 6135-01-647-5692
NSN 6150-01-381-9322
NSN 5950-00-293-8260
NSN 5930-01-411-7207
NSN 5855-01-346-7682
NSN 6610-01-226-8582
NSN 6645-01-473-9179
NSN 6135-01-508-3784
NSN 6610-01-364-0294