Countersunk 100 degrees by 0.280 in. Dia
A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Other articles of iron or steel not wire nesoi
NSN 4140-01-174-0646
NSN 4140-01-196-6308
NSN 6110-00-454-8843
NSN 5920-00-294-0753
NSN 5960-00-215-5884
NSN 5945-00-168-8448
NSN 6145-00-179-2493
NSN 5920-00-401-7951
NSN 6150-01-265-6892
NSN 5835-00-221-6628
NSN 6320-01-310-8068
NSN 6130-00-765-4217