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 5945-01-175-8209
NSN 6145-00-504-5221
NSN 6150-01-358-5030
NSN 6645-01-028-2186
NSN 5998-01-634-0604
NSN 6220-01-487-2229
NSN 6645-01-366-5033
NSN 6320-01-462-2295
NSN 6320-01-329-2297
NSN 5960-00-483-0161
NSN 5999-00-553-3946
NSN 6650-01-177-4398