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 5945-00-993-3078
NSN 5835-00-870-7034
NSN 2925-01-152-8618
NSN 6645-00-849-4429
NSN 5990-00-193-3028
NSN 6145-01-340-8071
NSN 6685-01-358-5124
NSN 5905-00-532-3200
NSN 6130-00-570-4231
NSN 5915-01-150-1658
NSN 5855-01-254-1571
NSN 6685-00-641-3699