Special Features:

I.D. Stepped: first segment, 0.4855 to 0.4860 in. Diameter 0.055 to 0.057 in. Deep; second segment, 0.296 to 0.298 in. Diameter 0.045 to 0.048 in. Long; and third segment 0.257 to 0.260 in. Diameter thru. Outside edge of beginning face chamfered, 45.0 degrees 0.030 in. Bolt holes countersunk on opposite side, 82.0 to 83.0 degrees to 0.280 to 0.290 in. Slot in perimeter, 0.095 to 0.105 in. Wide

Properties:

A flat metal or plastic item of various peripheral shapes having a solid (not laminated) cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole having a solid rectangular cross-section use disk, solid, plain. For round or hexagonal items with only one hole centrally located and with the length (thickness) exceeding 25 percent of the outside diameter or distance across peripheral flats, see spacer, sleeve. The thickness between the two parallel bearing surfaces must be 0.006 inch, (0.152 mm) or more for items less than 1/4 inch (6.35 mm) across the peripheral diameter, or smallest overall outside dimension, or must be 0.016 inch (0.406 mm) or more for items 1/4 inch (6.35 mm) or greater across the peripheral diameter or smallest overall outside dimension. For items with a thickness less than those indicated above, see shim. For items with one hole centrally located conforming to the above dimensional criteria use washer, flat or spacer, ring as applicable. When thickness and/or outside diameter or smallest overall outside dimension is designated as a tolerance/dimension the maximum dimension will be used to determine compliance. Excludes gasket; insulator (as modified) and mounting pad, electrical-electronic component.