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 2925-01-197-7864
NSN 6220-01-611-9471
NSN 7035-01-067-4809
NSN 5895-01-213-8151
NSN 5910-00-763-7779
NSN 5910-01-068-3625
NSN 5910-00-993-8976
NSN 6610-00-402-8922
NSN 6645-01-597-2222
NSN 5925-01-107-6624
NSN 6135-01-428-8821
NSN 6145-01-145-5177