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 6135-01-494-3607
NSN 5985-01-032-9817
NSN 5915-01-414-2634
NSN 4140-00-195-1980
NSN 5985-01-278-0493
NSN 6130-01-033-4206
NSN 5985-00-372-5946
NSN 2925-01-463-3899
NSN 4140-01-116-3138
NSN 6105-01-218-4320
NSN 5999-01-465-9859
NSN 5905-01-352-4785