Item has 12 holes drilled through and equally spaced. 3 are equally spaced from each other (every 4th hole) and 8-32 unc 2b. The other 9 are 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 5960-01-344-2604
NSN 6220-00-484-4674
NSN 5855-00-436-3852
NSN 7035-00-830-1235
NSN 5930-01-153-2667
NSN 6135-01-092-4734
NSN 5990-01-092-9206
NSN 4140-01-569-3120
NSN 6620-01-373-8968
NSN 6650-01-508-3651
NSN 5945-01-533-6153
NSN 5999-01-240-4803