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 5895-01-479-5031
NSN 6620-01-253-0374
NSN 5998-01-186-2083
NSN 5910-01-551-9189
NSN 5930-00-999-9590
NSN 5905-01-111-2520
NSN 5895-01-421-4160
NSN 6105-01-580-7771
NSN 7035-00-541-8516
NSN 7035-01-574-1784
NSN 6685-01-017-0366
NSN 5996-01-097-9320