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 6220-01-069-3685
NSN 5855-01-551-7923
NSN 6220-01-351-9046
NSN 6105-01-446-9393
NSN 5935-01-286-0687
NSN 5855-01-448-9794
NSN 5999-01-486-0279
NSN 6610-01-184-3210
NSN 6135-00-485-7402
NSN 6110-01-289-4689
NSN 5996-00-231-9322
NSN 5855-01-542-9059