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 5960-00-273-3260
NSN 5960-01-381-7725
NSN 6620-01-449-8743
NSN 5990-01-205-5937
NSN 5910-01-043-0589
NSN 2925-01-019-8735
NSN 5935-01-396-7940
NSN 6135-00-097-8162
NSN 6105-01-064-6508
NSN 6110-01-478-3588
NSN 2925-00-905-2655
NSN 5960-01-130-0141