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 4140-01-502-8290
NSN 5990-00-252-1702
NSN 5960-01-127-0246
NSN 6650-01-521-0902
NSN 5998-01-014-4557
NSN 6110-01-256-8432
NSN 5905-01-265-4677
NSN 6135-00-050-7189
NSN 6220-01-381-1074
NSN 6220-01-090-0126
NSN 5985-01-473-3446
NSN 6645-01-468-7669