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 6220-01-565-8177
NSN 6685-00-128-0564
NSN 5945-01-659-4666
NSN 5999-00-149-0624
NSN 5905-01-072-8061
NSN 5925-00-500-9354
NSN 5855-01-152-8781
NSN 6610-01-128-2428
NSN 5996-01-437-3998
NSN 5905-01-262-7850
NSN 5835-00-466-8544
NSN 5855-01-630-2164