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 6685-01-501-1390
NSN 6110-00-781-4285
NSN 5910-00-447-0974
NSN 5935-00-112-5194
NSN 6645-01-548-2094
NSN 5855-01-273-6132
NSN 5935-01-067-7375
NSN 6620-00-824-2176
NSN 5985-00-636-8689
NSN 5996-00-901-0519
NSN 5920-01-605-8182
NSN 6610-01-242-9674