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 5930-00-468-1004
NSN 6110-00-520-8442
NSN 5985-01-141-0238
NSN 5945-01-261-2406
NSN 5935-00-836-6247
NSN 6620-01-087-2354
NSN 6645-00-816-5337
NSN 5999-01-377-3618
NSN 5950-01-203-6874
NSN 2925-01-564-8043
NSN 6240-01-017-8281
NSN 2925-01-131-4531