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 6130-01-351-5436
NSN 5996-00-754-6153
NSN 5965-01-238-3900
NSN 5965-01-503-1617
NSN 6110-01-660-4195
NSN 5945-01-643-2447
NSN 5996-01-513-9656
NSN 5835-01-464-7038
NSN 6320-00-593-0379
NSN 6320-00-098-2858
NSN 7035-01-339-5480
NSN 5930-01-491-2590