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 5930-00-332-4448
NSN 5950-01-432-0877
NSN 5945-01-328-8526
NSN 5910-01-629-3709
NSN 5975-01-649-1452
NSN 6135-01-646-5986
NSN 5915-00-905-6281
NSN 5905-01-352-0901
NSN 6320-00-546-9249
NSN 6240-00-726-1648
NSN 6150-01-377-4037
NSN 6645-00-767-6307