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 5925-01-157-6632
NSN 5935-00-446-8733
NSN 5935-01-540-6858
NSN 6685-00-604-4370
NSN 5905-01-423-8414
NSN 6135-01-448-0471
NSN 6150-01-476-2223
NSN 6320-01-132-2746
NSN 5905-01-660-3470
NSN 6320-00-925-0558
NSN 5965-00-013-7990
NSN 5895-01-430-5452