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 5965-00-033-5928
NSN 5895-00-954-8264
NSN 6130-01-212-0663
NSN 6610-01-127-0724
NSN 5920-01-398-2247
NSN 6620-00-555-3992
NSN 6150-00-908-0782
NSN 5835-00-419-0575
NSN 6610-01-592-4097
NSN 5999-01-559-7553
NSN 5935-01-425-1373
NSN 6610-01-023-6073