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 5930-00-274-7167
NSN 5935-00-425-4383
NSN 6135-01-177-3552
NSN 4140-01-553-9193
NSN 5950-01-041-0775
NSN 5855-01-261-5495
NSN 5975-01-226-8100
NSN 4140-01-500-1187
NSN 5990-01-094-7740
NSN 6130-01-430-3149
NSN 6645-01-384-7791
NSN 6645-01-136-1491