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 2925-01-159-8312
NSN 5945-01-195-6766
NSN 5999-00-170-6744
NSN 6220-01-283-5663
NSN 6645-01-452-9495
NSN 2925-01-518-3453
NSN 6145-01-338-4334
NSN 6130-01-479-8474
NSN 6105-01-497-0507
NSN 6145-01-136-3580
NSN 5910-01-146-4317
NSN 5935-01-412-6280