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 6150-01-451-4898
NSN 6240-01-248-7191
NSN 5910-01-573-6538
NSN 6110-00-246-3941
NSN 5998-01-611-8731
NSN 5915-00-711-4630
NSN 6645-00-067-5962
NSN 5999-01-108-2072
NSN 5975-01-233-5736
NSN 5960-00-720-0615
NSN 5996-01-527-0245
NSN 5915-01-431-7962