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 5975-00-469-9238
NSN 5998-00-065-0775
NSN 2925-01-421-9665
NSN 6620-00-115-9050
NSN 5999-01-032-6818
NSN 5985-01-316-6428
NSN 6105-01-504-4368
NSN 6110-01-213-0210
NSN 5925-00-256-3486
NSN 5990-01-411-5930
NSN 5990-01-341-5735
NSN 5930-01-029-3274