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 5895-01-511-1430
NSN 5996-01-503-3410
NSN 7035-01-068-5077
NSN 2925-01-534-7314
NSN 5985-01-261-0739
NSN 5950-01-041-3045
NSN 5998-00-583-6570
NSN 6110-01-227-2617
NSN 5930-00-762-0562
NSN 6645-00-927-1444
NSN 5925-01-559-0243
NSN 6130-00-205-1714