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 5835-00-946-2656
NSN 6145-00-609-5330
NSN 6220-00-312-2007
NSN 5965-01-005-0341
NSN 6620-01-232-8552
NSN 5895-01-241-0407
NSN 6135-01-136-1059
NSN 7035-01-189-1549
NSN 5945-00-896-6191
NSN 6240-00-166-0340
NSN 6320-01-213-3974
NSN 5930-00-351-5455