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 5855-01-510-2898
NSN 5910-00-484-8583
NSN 6130-01-582-0036
NSN 2925-00-789-1106
NSN 5999-01-090-5411
NSN 6240-00-413-4577
NSN 7035-01-534-7930
NSN 6240-01-273-0193
NSN 6220-00-472-1706
NSN 6110-00-935-5351
NSN 5895-00-827-0240
NSN 6610-01-391-5092