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 7035-01-506-9957
NSN 6135-01-594-6107
NSN 6650-01-540-5157
NSN 2925-00-989-0523
NSN 5990-01-126-5824
NSN 5985-00-134-9311
NSN 6150-00-111-0881
NSN 6610-00-139-1105
NSN 6685-00-342-9408
NSN 5999-01-221-6246
NSN 5935-01-215-1422
NSN 5935-01-165-3039