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 5895-01-417-5601
NSN 6105-00-102-2786
NSN 5835-00-997-4680
NSN 5960-01-217-1479
NSN 5910-01-101-4734
NSN 5990-01-261-2962
NSN 6685-01-053-3282
NSN 4140-00-758-7686
NSN 6645-00-413-0461
NSN 6110-00-014-8160
NSN 2925-01-400-2286
NSN 5990-00-014-2310