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 6620-00-388-9202
NSN 6135-00-542-6728
NSN 6645-01-287-7348
NSN 6130-00-078-1279
NSN 5960-01-365-8752
NSN 7035-01-085-5955
NSN 5950-00-961-1634
NSN 5990-00-234-9136
NSN 6320-01-292-6635
NSN 6685-01-049-3726
NSN 6130-00-440-9057
NSN 6320-01-551-3553