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 6620-00-269-5168
NSN 5990-00-707-0731
NSN 5910-01-257-5916
NSN 5945-00-161-3278
NSN 5910-01-226-4264
NSN 5999-01-200-7992
NSN 6650-01-233-8440
NSN 5960-01-189-5712
NSN 6220-01-502-7312
NSN 5998-01-401-5396
NSN 5999-01-467-0036
NSN 6105-01-240-3780