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 5965-01-030-7253
NSN 6145-01-415-6127
NSN 5990-00-229-4647
NSN 6320-01-352-8084
NSN 7035-01-372-0421
NSN 6645-00-627-1090
NSN 5960-00-916-3859
NSN 5910-01-068-3625
NSN 6685-00-494-7885
NSN 5855-01-173-0808
NSN 5960-01-444-2205
NSN 5945-01-462-1555