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 5996-01-316-0621
NSN 5996-01-014-8857
NSN 6320-01-113-7647
NSN 6320-00-456-0836
NSN 5915-01-145-5340
NSN 6645-01-480-3347
NSN 6320-01-125-3361
NSN 5965-01-136-5657
NSN 6130-01-076-5968
NSN 5930-01-556-6394
NSN 5998-00-292-9515
NSN 6145-00-110-7459