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 5910-01-422-0345
NSN 5950-01-560-2280
NSN 5855-01-655-4035
NSN 6220-01-335-0201
NSN 5960-01-412-0619
NSN 6685-01-517-7011
NSN 6320-01-390-5385
NSN 5925-01-129-6222
NSN 6105-00-583-3998
NSN 6240-01-026-1376
NSN 5905-01-020-0173
NSN 6135-00-862-5736