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 6645-00-389-3370
NSN 6110-01-054-2354
NSN 5996-01-538-1090
NSN 5935-00-280-2206
NSN 5910-01-084-7276
NSN 5935-01-293-0105
NSN 6620-01-263-6697
NSN 5950-01-632-0739
NSN 6135-00-432-8779
NSN 5855-01-657-7657
NSN 5835-01-077-6278
NSN 5950-01-592-2420