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 5950-01-158-4148
NSN 5945-00-149-0619
NSN 6105-01-511-0383
NSN 6150-01-439-5145
NSN 5945-00-513-2977
NSN 5910-01-011-4729
NSN 6105-00-177-7996
NSN 2925-01-077-6867
NSN 4140-01-416-4898
NSN 5985-01-359-5084
NSN 5905-00-307-4358
NSN 6645-01-377-2553