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 6620-00-001-1398
NSN 6135-01-056-4609
NSN 5895-01-559-8856
NSN 7035-01-416-5910
NSN 5998-01-054-3800
NSN 6135-01-351-2690
NSN 5930-00-518-0759
NSN 6150-00-542-8668
NSN 6220-01-115-3027
NSN 5998-01-109-6026
NSN 5920-01-587-7579
NSN 6145-01-415-2658