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 6135-01-561-5945
NSN 6645-00-850-6486
NSN 4140-00-311-6329
NSN 5945-00-296-8464
NSN 6145-01-316-6615
NSN 6150-01-067-6438
NSN 6130-00-469-3161
NSN 6650-01-566-1573
NSN 5835-00-617-3578
NSN 5960-01-052-9573
NSN 5990-01-146-1779
NSN 6105-01-441-1912