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 5985-00-781-0455
NSN 6130-00-939-8862
NSN 5998-01-571-9863
NSN 5935-01-062-0705
NSN 4140-01-327-3241
NSN 6150-00-006-4231
NSN 5925-01-032-8290
NSN 6220-01-446-8454
NSN 5915-00-670-0698
NSN 5935-00-431-8347
NSN 5950-00-258-6776
NSN 5905-00-078-8814