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 6240-01-418-5021
NSN 5975-01-428-3305
NSN 5990-00-893-8998
NSN 5935-01-272-0444
NSN 4140-01-503-2668
NSN 5895-01-626-6037
NSN 5985-01-344-6488
NSN 6610-00-059-6569
NSN 5935-01-155-1336
NSN 5925-00-069-8985
NSN 6130-01-525-7941
NSN 5999-00-784-2835