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 5999-01-355-7474
NSN 5910-00-968-8021
NSN 6320-01-176-8367
NSN 2925-00-436-9837
NSN 2925-01-004-1683
NSN 6110-00-317-3538
NSN 6130-01-436-3328
NSN 2925-00-596-9775
NSN 6620-00-556-1976
NSN 6130-01-249-0795
NSN 5925-01-555-7565
NSN 5990-01-548-3711