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 5835-01-377-8972
NSN 6220-01-084-0287
NSN 5935-00-185-5560
NSN 2925-00-734-9380
NSN 5998-01-394-5249
NSN 5960-00-243-2216
NSN 6685-01-358-9968
NSN 5975-01-377-7921
NSN 6620-00-663-4205
NSN 5950-00-997-9500
NSN 6220-01-579-4786
NSN 5965-01-458-8669