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 6620-00-621-6951
NSN 5960-01-438-0245
NSN 6220-01-450-4659
NSN 6145-01-476-2202
NSN 5996-01-126-2156
NSN 5950-00-456-8443
NSN 6135-01-496-5810
NSN 6610-01-253-5112
NSN 5905-01-132-0264
NSN 6650-01-302-7685
NSN 5855-01-175-3990
NSN 5910-01-369-9618