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 4140-01-539-5410
NSN 5905-01-302-7132
NSN 6320-01-240-4637
NSN 6105-01-106-4157
NSN 2925-01-503-6792
NSN 5925-01-555-8524
NSN 6220-01-558-1127
NSN 5975-01-620-0441
NSN 5945-01-497-3658
NSN 6240-00-235-5159
NSN 4140-01-099-1698
NSN 6320-01-422-1212