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 7035-00-902-8995
NSN 5990-01-258-3848
NSN 6320-01-426-1324
NSN 6130-01-446-2998
NSN 5855-01-031-4729
NSN 5945-01-551-7283
NSN 5930-01-443-5430
NSN 5910-00-044-4479
NSN 6650-00-448-8290
NSN 6320-01-547-9877
NSN 6135-00-455-2425
NSN 5895-01-413-5699