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 5910-00-061-9555
NSN 5950-01-104-4717
NSN 5998-01-608-8068
NSN 4140-01-072-3379
NSN 6650-01-244-1573
NSN 5990-01-045-7754
NSN 5998-00-807-0515
NSN 5996-00-713-0935
NSN 5910-01-097-6692
NSN 2925-00-592-2819
NSN 6645-01-514-7901
NSN 6320-01-536-3077