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 6145-00-019-0047
NSN 5975-01-361-0940
NSN 5855-01-147-4785
NSN 5855-01-187-2293
NSN 5910-01-528-5895
NSN 6685-00-661-2347
NSN 7035-01-647-9698
NSN 6110-00-218-4737
NSN 6105-01-341-9122
NSN 6105-01-332-0182
NSN 6240-00-194-7924
NSN 5990-01-521-7890