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 7035-00-543-3272
NSN 6610-01-194-8659
NSN 6240-01-492-2469
NSN 5998-00-152-9458
NSN 6130-00-725-1764
NSN 5855-01-245-8689
NSN 6610-00-620-0346
NSN 5975-00-239-2364
NSN 6110-00-663-4054
NSN 5905-01-158-7174
NSN 5895-01-506-1656
NSN 5910-00-225-8489