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 6135-01-231-4809
NSN 6135-01-443-5279
NSN 5855-01-606-8278
NSN 2925-01-500-0730
NSN 4140-00-854-8871
NSN 6620-01-374-9058
NSN 5925-00-337-8138
NSN 6110-01-424-0612
NSN 6320-01-054-3046
NSN 5945-00-222-7503
NSN 5895-01-535-1395
NSN 6620-01-644-8388