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 5910-01-109-8441
NSN 6650-00-010-5228
NSN 5910-00-840-5455
NSN 5990-01-095-8866
NSN 6110-00-738-3400
NSN 5950-00-112-9131
NSN 6220-01-250-4149
NSN 6610-01-020-3764
NSN 5835-00-450-6763
NSN 6150-00-923-4207
NSN 5935-01-312-3451
NSN 6650-00-859-1859