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 5925-01-422-7967
NSN 5985-01-361-7736
NSN 5965-01-534-9961
NSN 5835-00-870-7034
NSN 5965-01-069-5650
NSN 5965-01-415-0872
NSN 5945-01-604-7676
NSN 5999-01-624-7455
NSN 6110-01-014-3840
NSN 5905-01-116-3520
NSN 7035-00-513-9764
NSN 5905-01-127-8694