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 5990-01-023-3307
NSN 5965-01-485-7291
NSN 5960-01-122-7310
NSN 6685-01-642-2757
NSN 4140-01-289-7912
NSN 5935-01-606-0645
NSN 7035-00-896-3213
NSN 6150-00-239-5029
NSN 5996-01-395-9237
NSN 5990-01-565-2226
NSN 5910-01-067-7702
NSN 4140-00-640-6811