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 5965-01-440-1213
NSN 5935-00-143-1399
NSN 6685-01-033-4648
NSN 5930-01-281-8739
NSN 6130-01-345-7568
NSN 5998-00-850-2363
NSN 6650-01-439-8647
NSN 5855-01-116-8905
NSN 6105-00-101-2547
NSN 6645-01-442-6476
NSN 6145-00-826-9574
NSN 6110-01-138-5626