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 5975-01-014-4648
NSN 5855-01-527-0392
NSN 5925-01-359-6329
NSN 6620-01-562-8816
NSN 6105-01-578-6318
NSN 5835-01-386-4027
NSN 5835-00-226-7825
NSN 5910-01-429-1059
NSN 5835-01-160-7282
NSN 5835-01-352-7211
NSN 5915-00-467-6796
NSN 5950-00-266-2511