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 5985-01-541-4797
NSN 5910-01-192-7973
NSN 5835-01-227-4752
NSN 5855-00-058-1293
NSN 5930-01-497-1872
NSN 5895-01-064-5082
NSN 6135-01-535-2307
NSN 7035-01-271-1643
NSN 5999-01-124-7505
NSN 6685-01-195-2129
NSN 5975-00-144-7878
NSN 6610-01-425-1523