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 5990-00-931-0594
NSN 5996-01-312-6856
NSN 5999-00-525-3995
NSN 6685-01-097-5569
NSN 5895-01-247-0751
NSN 5935-00-954-0670
NSN 5998-00-116-2227
NSN 6150-00-942-4917
NSN 6150-01-071-2381
NSN 6685-01-367-2534
NSN 6105-01-158-2232
NSN 5999-01-127-3773