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 6105-00-773-8480
NSN 6220-00-455-6306
NSN 4140-00-166-8023
NSN 5905-01-056-3351
NSN 6240-01-645-6782
NSN 6220-00-763-4131
NSN 5985-01-075-3042
NSN 5999-00-231-3917
NSN 7035-01-038-9970
NSN 7035-01-168-3596
NSN 5950-00-342-7663
NSN 5930-01-027-5084