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 6135-01-498-7945
NSN 6645-00-467-6094
NSN 5950-01-581-0673
NSN 5975-00-837-3293
NSN 5925-00-144-0482
NSN 5975-01-220-8905
NSN 6105-00-527-8571
NSN 6110-01-265-8720
NSN 5975-01-412-0782
NSN 5835-00-912-5656
NSN 5996-01-333-8585
NSN 7035-01-322-9239