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 5895-00-721-4032
NSN 6610-00-232-1533
NSN 5910-01-566-5423
NSN 5975-01-180-5193
NSN 7035-01-657-5766
NSN 6220-01-263-7281
NSN 6105-01-400-4194
NSN 6610-01-298-5662
NSN 6145-01-065-0799
NSN 5950-01-202-6249
NSN 5985-01-394-6495
NSN 5945-01-581-1563