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 5975-01-401-5355
NSN 5920-01-619-5258
NSN 5930-00-161-0601
NSN 6145-01-423-8625
NSN 6145-01-415-1263
NSN 5920-00-589-2710
NSN 6240-00-406-0021
NSN 6150-00-296-2361
NSN 5930-00-361-8887
NSN 5895-00-966-2784
NSN 5905-00-377-3793
NSN 6145-01-580-1025