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 5960-01-094-7569
NSN 6240-01-420-1011
NSN 4140-01-413-7065
NSN 6645-00-616-1289
NSN 5999-00-529-0157
NSN 5975-00-918-5262
NSN 5920-01-123-9854
NSN 5920-01-366-8127
NSN 5999-00-692-6514
NSN 5905-01-096-3845
NSN 6645-00-616-1289
NSN 6685-01-328-7691