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 7035-00-193-2269
NSN 5960-00-273-3058
NSN 6685-01-593-5991
NSN 5855-01-138-4985
NSN 5990-01-580-2191
NSN 6320-01-300-5350
NSN 6150-01-104-9919
NSN 5855-01-020-2211
NSN 5960-01-231-6502
NSN 6320-01-129-9656
NSN 6610-01-358-7582
NSN 5999-01-461-2654