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 5935-00-598-6126
NSN 5985-01-417-3184
NSN 5925-01-542-9068
NSN 5965-00-204-8513
NSN 6110-01-415-8951
NSN 6110-01-203-4972
NSN 5975-01-157-6481
NSN 5935-01-555-3882
NSN 5965-01-119-8237
NSN 6240-01-600-7489
NSN 6610-01-445-9580
NSN 6130-01-542-8367