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 4140-01-625-5837
NSN 6320-01-539-4789
NSN 5998-00-067-4316
NSN 6685-01-423-7269
NSN 5925-00-239-2135
NSN 4140-01-542-3302
NSN 5915-01-032-1560
NSN 5925-01-262-0759
NSN 5950-01-251-3974
NSN 6685-01-654-3070
NSN 5998-00-907-1556
NSN 5945-01-340-4972