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 5895-01-634-0630
NSN 6610-01-036-8225
NSN 6645-01-579-2898
NSN 6240-01-040-8897
NSN 6240-00-215-8550
NSN 6110-01-097-6805
NSN 5915-01-446-3837
NSN 5999-00-226-7859
NSN 2925-01-236-3547
NSN 5910-00-431-5141
NSN 5990-00-970-2171
NSN 6110-00-202-2990