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 6110-01-431-0589
NSN 6320-00-450-7014
NSN 7035-01-088-6415
NSN 5975-01-152-2635
NSN 5910-00-471-2519
NSN 5895-01-492-5415
NSN 5965-00-220-6900
NSN 6610-01-458-6743
NSN 5925-00-070-4376
NSN 5935-00-455-0990
NSN 6240-01-532-2283
NSN 5950-00-232-9313