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 6135-00-733-9665
NSN 6685-00-299-8496
NSN 6130-00-887-4652
NSN 6620-01-104-5510
NSN 5960-00-338-9164
NSN 6240-01-436-9868
NSN 5920-01-113-5881
NSN 5960-00-382-6012
NSN 6240-00-774-6116
NSN 2925-01-032-3814
NSN 6620-00-938-1789
NSN 6240-00-156-1607