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 5999-01-171-7722
NSN 5920-01-216-8022
NSN 6320-00-070-4544
NSN 5910-01-573-6538
NSN 5855-01-436-7621
NSN 6650-01-641-3230
NSN 6645-00-102-0015
NSN 6220-00-368-4945
NSN 6685-00-891-5986
NSN 6610-01-167-8747
NSN 5998-00-341-6039
NSN 6220-01-437-6820