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 5965-01-182-5768
NSN 6110-01-212-6672
NSN 5996-00-081-8057
NSN 6610-01-324-7017
NSN 5915-01-597-8873
NSN 6610-00-496-7842
NSN 5975-01-356-0632
NSN 5999-01-029-0987
NSN 6320-01-631-7828
NSN 5999-01-518-4820
NSN 5855-01-499-3576
NSN 6650-01-016-0406