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.)
NSN 5960-00-185-9974
NSN 6650-01-327-3068
NSN 5975-01-297-9588
NSN 5905-01-289-1164
NSN 6620-01-016-8264
NSN 6110-01-481-4480
NSN 5905-01-114-9791
NSN 6320-01-607-0347
NSN 6645-01-191-0107
NSN 6610-01-200-6861
NSN 6320-01-624-0193
NSN 5996-00-857-9810