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 6650-01-063-6604
NSN 6645-00-079-1430
NSN 6320-01-054-3046
NSN 5998-01-010-3217
NSN 4140-01-066-7975
NSN 5950-01-082-3141
NSN 5925-01-593-0761
NSN 4140-01-507-0471
NSN 6110-00-539-0422
NSN 5998-01-281-8687
NSN 5945-01-437-7657
NSN 5925-01-468-7146