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 6150-01-111-9556
NSN 5960-01-599-9821
NSN 6610-01-568-5241
NSN 5998-01-544-3345
NSN 5999-01-659-7024
NSN 5915-01-357-5580
NSN 5930-00-593-0452
NSN 5965-01-218-7795
NSN 5925-01-557-9007
NSN 5930-00-837-7704
NSN 5925-00-275-7599
NSN 5945-01-553-2301