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 5945-00-712-9009
NSN 6685-01-206-1066
NSN 5996-01-394-2548
NSN 5915-01-427-9857
NSN 6150-01-035-0825
NSN 5925-01-381-0614
NSN 5975-01-605-0235
NSN 6130-00-781-7486
NSN 6145-01-205-3674
NSN 7035-01-323-0164
NSN 5920-01-054-5315
NSN 5960-00-275-7497