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 7035-01-633-9537
NSN 5905-01-204-8737
NSN 6620-01-446-4797
NSN 5905-01-315-4365
NSN 5945-01-587-0524
NSN 6240-00-450-0675
NSN 5920-01-281-5101
NSN 6620-00-248-9513
NSN 6220-01-604-9238
NSN 6685-01-017-1419
NSN 6240-01-416-3713
NSN 5945-00-889-1494