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 5950-00-100-5905
NSN 5835-01-302-6844
NSN 5930-01-315-1911
NSN 5905-00-263-3453
NSN 6685-00-153-3914
NSN 5935-00-198-4462
NSN 5960-01-564-5044
NSN 6135-01-231-4809
NSN 6110-00-451-3779
NSN 6240-01-059-3563
NSN 5855-00-911-1370
NSN 5950-01-080-0433