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 5835-00-850-1475
NSN 2925-00-247-6248
NSN 5945-01-470-3680
NSN 5990-00-103-0528
NSN 5965-00-529-0602
NSN 5835-00-891-2232
NSN 6240-01-208-4323
NSN 6645-01-025-1002
NSN 6105-00-121-8518
NSN 6220-01-338-9507
NSN 5998-01-454-3585
NSN 6220-01-366-6747