Item has 12 holes through and equally spaced. 3 are equally spaced from each other (every 4th hole) and 8-32 unc-2b. The other 9 are unthreaded and 0.1360 thru.
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.
NSN 5975-01-177-5688
NSN 6240-01-467-9719
NSN 6320-01-578-6006
NSN 5925-00-062-6948
NSN 5915-00-270-1076
NSN 6240-01-170-7340
NSN 5905-01-383-8411
NSN 5945-01-634-0588
NSN 5999-00-383-3381
NSN 5975-01-534-7115
NSN 6145-01-542-9141
NSN 6620-01-364-0195