Special Features:

Nut, plain, hexagon; steel; cadmium plated; 1.500-12, unf-3b rh thd, 0.484 in. Min, 0.516 in. Max nut h, 2.188 in. Min, 2.250 in max w across flats, chamfered type bearing surface, 108 min, 112 max degrees countersink angle

Properties:

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)