Special Features:

Surface flat holes drilled on 2.500 in diameter bolt circle; surface flat holes, two 0.281 in. Diameter 180 degrees apart, one 0.250-20 nc tapped and evenly spaced between 0.281 in. Holes; drill and tap on the periphery surface 180 degrees from 0.250 in hole, one 0.312-18 nc hole flat bottom 0.469 in. To point

Properties:

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)