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 6145-01-396-9124
NSN 6645-01-136-9825
NSN 5895-00-657-5645
NSN 6105-01-444-3849
NSN 6145-01-427-3520
NSN 5985-01-353-1672
NSN 6610-01-656-8198
NSN 5950-00-161-9179
NSN 5990-01-174-4469
NSN 5855-01-383-6860
NSN 5975-01-401-5355
NSN 5935-00-234-0291