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 6610-00-138-5898
NSN 5905-00-034-2530
NSN 5945-01-608-2840
NSN 5855-01-346-7682
NSN 6320-00-116-3658
NSN 5920-01-322-4216
NSN 6240-01-356-1170
NSN 5835-00-677-9659
NSN 6145-01-102-5698
NSN 5998-00-768-5251
NSN 6610-00-166-0233
NSN 5945-01-364-7904