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 5950-00-337-0829
NSN 6240-00-398-0740
NSN 5999-01-020-5907
NSN 5855-00-610-4052
NSN 7035-00-145-9138
NSN 6685-01-440-0716
NSN 6130-00-089-0402
NSN 5910-00-751-9581
NSN 6130-00-222-5291
NSN 5975-01-510-1416
NSN 5990-00-727-0723
NSN 5985-00-172-2804