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 6110-01-094-3907
NSN 2925-00-659-9256
NSN 6620-01-651-1315
NSN 6130-00-259-1697
NSN 5999-01-433-4721
NSN 5985-01-566-3447
NSN 6135-01-180-9611
NSN 6240-01-380-2127
NSN 2925-01-425-7087
NSN 6145-01-068-4668
NSN 6130-01-409-1443
NSN 5998-01-191-9507