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 6105-00-812-6267
NSN 6130-00-142-9532
NSN 6650-01-251-0584
NSN 5985-00-935-0127
NSN 6105-01-442-7801
NSN 7035-00-270-5519
NSN 5855-01-277-1663
NSN 6620-00-782-0337
NSN 6105-01-504-0965
NSN 5945-01-533-2085
NSN 6240-01-253-0687
NSN 5950-00-997-1391