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 5910-01-038-1562
NSN 6240-01-599-2679
NSN 5915-01-054-3109
NSN 6110-01-560-5080
NSN 6645-00-813-3084
NSN 6110-00-159-0755
NSN 5835-01-301-0022
NSN 2925-01-212-1040
NSN 6620-01-542-5569
NSN 6685-00-659-7831
NSN 2925-01-443-1748
NSN 5895-01-378-6237