2a and b8
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 6150-01-141-2769
NSN 5925-01-315-3806
NSN 2925-01-212-1040
NSN 6240-01-504-4287
NSN 5975-00-181-5825
NSN 5985-00-826-8450
NSN 5930-00-229-5554
NSN 5930-01-447-7516
NSN 6105-01-245-8932
NSN 6620-01-322-5576
NSN 5996-01-370-4940
NSN 5925-00-647-3469