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 4140-01-509-1300
NSN 6150-01-345-8310
NSN 5950-01-543-2501
NSN 6220-01-529-6112
NSN 5996-01-158-9695
NSN 5930-01-054-4710
NSN 7035-01-227-7492
NSN 5998-01-007-4735
NSN 5935-00-478-7658
NSN 5990-01-605-4769
NSN 5985-01-513-6656
NSN 7035-01-508-0619