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 6145-01-228-4851
NSN 6130-00-899-0485
NSN 5835-00-466-8544
NSN 6220-00-113-3622
NSN 6645-00-842-4653
NSN 6135-00-574-1204
NSN 5855-00-494-9581
NSN 5925-00-968-7444
NSN 5895-00-596-8678
NSN 6645-00-064-1180
NSN 6240-00-408-7274
NSN 6220-01-449-7223