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 5910-01-357-6484
NSN 2925-01-408-9485
NSN 5960-00-186-6344
NSN 6610-01-273-2075
NSN 6130-01-020-0582
NSN 6145-00-269-4271
NSN 6145-01-297-2835
NSN 5930-01-006-1525
NSN 6240-00-008-5263
NSN 5915-00-223-5308
NSN 5930-01-107-1827
NSN 5905-01-476-3529