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 6620-01-456-0529
NSN 6240-00-243-8336
NSN 5975-01-256-5012
NSN 6110-00-571-1749
NSN 4140-01-241-2197
NSN 5835-01-090-0784
NSN 6110-01-506-8218
NSN 5965-00-518-0958
NSN 5985-01-412-4726
NSN 5835-00-007-6824
NSN 6145-01-481-3688
NSN 5920-01-040-0425