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 6150-01-391-5567
NSN 5905-01-184-9728
NSN 6610-01-252-4717
NSN 5945-00-362-0188
NSN 6145-00-486-3443
NSN 7035-01-200-4751
NSN 5996-01-589-2391
NSN 5990-01-154-3859
NSN 6145-00-244-2946
NSN 6610-01-067-4359
NSN 6130-01-493-6734
NSN 6645-01-620-4837