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 5975-01-606-6938
NSN 5855-01-020-7982
NSN 5945-00-287-8022
NSN 5998-01-145-4860
NSN 5985-00-318-7879
NSN 6220-01-512-9576
NSN 5975-00-706-7087
NSN 5855-01-093-8202
NSN 5915-00-577-3152
NSN 5915-01-383-7190
NSN 5965-01-441-8826
NSN 5990-01-463-5400