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 4140-01-269-3001
NSN 5915-01-048-8416
NSN 5990-00-613-2279
NSN 6610-01-605-1161
NSN 5915-01-003-0984
NSN 5935-01-412-4669
NSN 6645-00-318-5721
NSN 4140-01-573-0890
NSN 5999-01-081-9718
NSN 2925-01-381-5307
NSN 6320-01-476-7702
NSN 5925-01-292-0030