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 6650-00-891-9850
NSN 4140-01-384-4389
NSN 5996-00-159-8096
NSN 5960-01-649-1341
NSN 6610-01-359-0008
NSN 6145-00-010-5135
NSN 5905-01-011-6997
NSN 5960-01-357-1261
NSN 6105-01-268-2111
NSN 6645-01-593-6149
NSN 4140-00-283-6843
NSN 6645-00-801-8237