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 5905-00-285-2866
NSN 5920-01-171-2946
NSN 5985-01-044-6700
NSN 5945-01-218-5645
NSN 5985-01-506-5380
NSN 5910-01-013-7081
NSN 6220-01-508-5691
NSN 5925-01-396-1584
NSN 5998-01-622-6448
NSN 6620-01-106-2814
NSN 6685-00-873-2576
NSN 7035-01-629-4362