Special Features:

0.125 in. Dia. 8 holes equally spaced through wrenching flats, located 0.305 in. Porm 0.010 from bearing surface; 1.875 in. Diameter 0.125 in. Plus 0.020 in. W, circumferential groove located 0.305 in. Porm 0.010 in. From bearing surface

Properties:

A nut, flat on top and bottom, having eight flat sides. It may include a retaining dowel pin. 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).