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 6610-01-481-0469
NSN 5985-01-537-6441
NSN 5920-01-347-5852
NSN 6685-01-469-3137
NSN 6130-01-420-4843
NSN 5895-00-300-3214
NSN 6650-01-515-7248
NSN 5895-00-444-0823
NSN 5895-01-475-6812
NSN 5998-00-078-9319
NSN 5990-01-071-1505
NSN 5910-00-495-3168