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 6610-01-481-9262
NSN 6240-00-013-4764
NSN 6130-00-068-0237
NSN 5910-00-237-1388
NSN 5950-01-077-8724
NSN 5985-01-331-3195
NSN 6150-01-461-0388
NSN 6240-01-425-5655
NSN 5855-00-455-6070
NSN 6610-01-459-8722
NSN 5996-00-212-8004
NSN 6620-01-456-0529