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 5835-01-213-0833
NSN 5835-01-018-6294
NSN 5960-00-736-8568
NSN 5930-00-558-9157
NSN 6610-00-802-3465
NSN 6240-01-480-8996
NSN 6150-01-400-4211
NSN 5935-00-061-9580
NSN 5910-00-899-4992
NSN 6620-01-029-1881
NSN 6645-01-137-1684
NSN 5975-00-155-4181