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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5950-00-826-9627
NSN 7035-01-426-4133
NSN 6620-01-248-0358
NSN 5990-01-338-2103
NSN 5999-00-996-7251
NSN 6685-01-323-5272
NSN 5935-01-321-5003
NSN 5935-00-039-6176
NSN 6135-01-190-2628
NSN 5905-00-538-3811
NSN 6650-01-361-6812
NSN 5999-01-008-6470