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 6150-01-036-2122
NSN 4140-01-327-2844
NSN 5925-01-546-7844
NSN 6150-01-032-4556
NSN 5935-01-529-9882
NSN 6645-01-416-2016
NSN 5950-01-654-4778
NSN 5998-01-382-9748
NSN 6620-01-453-3135
NSN 5990-01-318-3238
NSN 5935-01-577-3543
NSN 4140-00-307-2732