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 4140-01-658-5138
NSN 6645-00-226-2270
NSN 6685-01-259-3006
NSN 6220-00-705-5254
NSN 5930-01-437-2538
NSN 5835-01-262-6561
NSN 6240-01-373-4530
NSN 6610-01-159-0438
NSN 5930-01-057-7654
NSN 6130-01-240-8801
NSN 5915-01-069-9227
NSN 6650-01-043-4221