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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6685-01-651-6666
NSN 7035-01-582-6442
NSN 6685-01-581-4566
NSN 5999-01-257-8314
NSN 5965-00-671-4119
NSN 4140-01-395-2039
NSN 5925-01-055-3868
NSN 5915-01-633-9845
NSN 6240-01-432-7926
NSN 6135-01-054-2462
NSN 5925-01-328-2053
NSN 6150-00-448-8435