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 5835-01-228-8666
NSN 7035-01-377-7712
NSN 5935-01-280-1668
NSN 6610-00-186-9180
NSN 5935-01-164-8600
NSN 5945-01-571-2547
NSN 5925-01-180-0082
NSN 5990-01-652-7373
NSN 6620-01-185-4040
NSN 6645-01-053-3185
NSN 6645-01-145-7357
NSN 6645-00-025-4771