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 5835-01-384-3206
NSN 5835-01-067-0075
NSN 5835-01-359-2575
NSN 5985-01-165-7862
NSN 5915-01-166-2757
NSN 6135-01-415-1163
NSN 6620-01-231-9731
NSN 5855-00-904-0684
NSN 6110-01-270-5177
NSN 5925-01-484-6975
NSN 5950-01-463-7280
NSN 6105-00-831-3552