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 5999-01-642-9391
NSN 6145-01-450-8419
NSN 6130-01-140-5922
NSN 5895-00-247-5490
NSN 6150-00-737-0464
NSN 5975-01-100-5088
NSN 5925-01-561-5188
NSN 4140-00-020-8930
NSN 6150-01-381-6796
NSN 6645-00-551-8291
NSN 5855-01-136-9532
NSN 5895-01-203-5030