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 6130-01-289-2966
NSN 5910-01-370-4401
NSN 6240-01-055-5193
NSN 5935-01-411-6129
NSN 5945-01-629-0945
NSN 7035-01-457-0371
NSN 5910-01-229-4309
NSN 5960-01-140-4253
NSN 6610-01-411-8770
NSN 5910-01-273-0709
NSN 5855-01-054-5243
NSN 5945-00-690-7802