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 6320-01-600-5808
NSN 5855-01-110-9564
NSN 5925-01-379-5348
NSN 5975-01-660-5826
NSN 5950-00-784-0475
NSN 7035-00-631-3782
NSN 6240-01-027-3544
NSN 5985-01-661-0166
NSN 5905-00-068-7492
NSN 6645-00-283-6794
NSN 5930-01-207-4900
NSN 6150-01-054-3983