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 5935-00-862-5158
NSN 6220-01-182-2060
NSN 5935-00-683-7894
NSN 5999-01-443-3181
NSN 5905-00-865-6700
NSN 5930-01-429-8443
NSN 6105-00-274-5460
NSN 5855-01-337-0245
NSN 6145-01-222-8707
NSN 5855-01-484-6507
NSN 5999-00-952-2442
NSN 6135-00-170-8819