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 5950-01-415-9313
NSN 7035-01-132-7209
NSN 5999-00-454-0292
NSN 5990-01-365-6016
NSN 6130-01-146-8105
NSN 6130-01-020-4331
NSN 6150-01-109-1419
NSN 5835-01-645-2892
NSN 5996-01-354-0502
NSN 5910-01-660-5779
NSN 5990-00-970-2171
NSN 6645-01-289-0376