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 7035-00-541-8516
NSN 5910-01-191-3972
NSN 5910-01-372-4527
NSN 5999-01-365-1226
NSN 5960-00-372-4876
NSN 5905-01-627-2013
NSN 6650-00-740-7338
NSN 6645-01-115-2171
NSN 5950-00-757-8670
NSN 5960-00-040-9989
NSN 7035-01-080-3392
NSN 2925-01-612-0405