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 5965-01-265-6814
NSN 5925-00-483-7532
NSN 6135-01-027-7543
NSN 5905-00-412-9651
NSN 5935-01-554-7417
NSN 6620-00-654-3738
NSN 6105-00-243-9278
NSN 6685-01-559-1996
NSN 5930-00-110-0169
NSN 5930-01-462-1710
NSN 5920-00-959-2810
NSN 6650-00-155-8431