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 5920-01-547-5196
NSN 5960-00-105-6463
NSN 6645-01-659-8683
NSN 5965-01-383-7235
NSN 6320-01-259-2604
NSN 5910-01-612-5819
NSN 5835-01-087-9515
NSN 6130-01-305-7417
NSN 5920-01-315-8080
NSN 5855-00-252-5743
NSN 6105-01-466-4929
NSN 5999-01-658-7027