A washer having a centrally located hole and two flat bearing surfaces which are not parallel.
NSN 6110-01-595-4382
NSN 5925-01-401-5314
NSN 5925-01-585-1688
NSN 4140-01-634-0330
NSN 5835-01-176-5422
NSN 5925-01-058-7651
NSN 5950-01-192-9238
NSN 5920-00-513-4546
NSN 5990-01-320-9817
NSN 5960-00-506-4855
NSN 5945-00-797-2572
NSN 5945-01-530-6581