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 6685-00-338-4235
NSN 5945-00-955-5708
NSN 5960-00-315-0358
NSN 7035-01-485-0269
NSN 5975-00-066-8071
NSN 5950-00-235-9572
NSN 5925-01-075-7154
NSN 5855-01-323-5394
NSN 5950-01-432-9031
NSN 5998-01-295-3975
NSN 4140-01-536-9823
NSN 6130-00-010-6824