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 6135-00-062-5080
NSN 5930-00-111-8291
NSN 6645-00-337-3638
NSN 5999-01-251-8425
NSN 6110-00-224-6128
NSN 5915-01-633-9845
NSN 6105-01-165-3823
NSN 6105-01-010-0827
NSN 6610-01-003-9763
NSN 2925-01-415-2140
NSN 5935-00-389-7160
NSN 6105-01-044-5907