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 5985-01-494-2253
NSN 5999-00-947-9456
NSN 6685-01-191-0106
NSN 5996-01-020-5759
NSN 6645-00-918-3785
NSN 5915-01-209-2788
NSN 5835-01-168-6256
NSN 5910-01-597-3469
NSN 5905-01-292-2606
NSN 6220-00-997-3223
NSN 6685-00-005-1288
NSN 5950-00-218-4922