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 6145-00-006-8438
NSN 5975-01-451-4415
NSN 6150-00-297-3928
NSN 6645-01-014-0793
NSN 6685-01-444-2235
NSN 5960-01-168-1063
NSN 6150-00-263-3451
NSN 5905-01-497-5313
NSN 5965-00-106-3195
NSN 6620-00-349-8013
NSN 5855-01-279-9938
NSN 4140-00-531-6696