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 6610-01-323-9426
NSN 6105-01-101-4020
NSN 6645-00-833-2395
NSN 6240-00-462-0461
NSN 6610-00-034-3709
NSN 5905-01-382-9671
NSN 5915-01-433-3170
NSN 6650-01-599-4335
NSN 5990-00-239-3432
NSN 5855-00-411-8688
NSN 5910-01-233-2052
NSN 2925-01-633-4048