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 5950-00-636-3063
NSN 6110-00-456-2058
NSN 6145-01-372-7286
NSN 5895-01-297-6041
NSN 5905-01-571-9075
NSN 2925-01-601-5050
NSN 5935-00-666-4877
NSN 5960-01-201-5804
NSN 5895-00-873-2626
NSN 5910-01-657-7894
NSN 5996-00-551-7919
NSN 5996-01-631-4606