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 6105-01-389-3339
NSN 5905-00-371-8623
NSN 2925-01-554-5246
NSN 5999-01-634-0576
NSN 6150-00-213-3855
NSN 5925-01-364-8334
NSN 6610-01-450-5688
NSN 5965-01-265-6814
NSN 6130-01-347-3620
NSN 6150-00-972-2598
NSN 5950-01-317-4386
NSN 5905-00-886-3654