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 5895-01-256-7691
NSN 5985-00-457-4243
NSN 5905-00-979-0626
NSN 6135-00-166-5984
NSN 6620-01-101-4408
NSN 5999-01-528-7216
NSN 6240-01-137-7383
NSN 4140-01-268-2429
NSN 5965-00-827-9680
NSN 5855-01-395-0676
NSN 5905-00-713-8502
NSN 5999-01-023-8776