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 5999-00-173-9773
NSN 6135-00-505-0679
NSN 6150-01-503-0179
NSN 5835-01-463-2334
NSN 5945-01-255-5197
NSN 6320-01-544-2799
NSN 5996-00-366-0233
NSN 6645-01-236-6387
NSN 6650-00-000-0164
NSN 5996-01-363-9606
NSN 6220-01-553-9091
NSN 5895-01-396-8261