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 5905-01-523-7891
NSN 5985-00-293-5684
NSN 5985-01-175-1220
NSN 5996-01-100-4361
NSN 6610-01-322-7677
NSN 6110-01-532-2573
NSN 6110-00-109-5758
NSN 5985-00-137-9068
NSN 5950-00-339-2323
NSN 4140-01-217-3214
NSN 5950-00-925-1895
NSN 5855-01-093-8202