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 5985-00-826-1735
NSN 6685-01-013-8915
NSN 5855-01-441-3189
NSN 6150-01-324-2681
NSN 6685-00-823-7790
NSN 5920-01-079-8924
NSN 6620-01-154-9651
NSN 5985-01-322-8571
NSN 5985-01-530-2765
NSN 6110-01-355-1286
NSN 6620-01-530-0778
NSN 6145-01-352-6913