Special Features:

Drive point holes are 180 degrees apart on a 4 in. Bolt circle and 2 holes 0.437 in. Diameter counterbored 0.656 in. Diameter 0.375 in. Deep on a 4 in. Bolt circle 90 degrees apart with a drive hole equidistant between

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.)