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 6145-00-575-7190
NSN 6105-01-587-3499
NSN 6105-00-547-2752
NSN 5935-01-471-1677
NSN 5910-01-591-3751
NSN 5895-00-205-2924
NSN 6145-01-501-6548
NSN 6645-00-160-0503
NSN 5996-00-706-9390
NSN 7035-01-649-8977
NSN 5910-00-166-9918
NSN 5855-01-205-7030