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 5975-00-177-2957
NSN 7035-01-416-5910
NSN 5925-01-197-6627
NSN 5925-01-394-1073
NSN 5960-01-016-5387
NSN 6105-01-158-6505
NSN 6645-00-232-4070
NSN 5905-00-913-0282
NSN 6685-01-497-7063
NSN 6320-01-201-2776
NSN 5895-00-636-1103
NSN 5950-01-498-1218