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 5990-01-423-8189
NSN 6150-00-470-7136
NSN 5920-00-247-3830
NSN 6620-01-207-0667
NSN 5925-01-336-8448
NSN 5925-01-571-3959
NSN 5835-01-482-1591
NSN 5990-01-601-0466
NSN 6650-00-266-6808
NSN 6150-01-492-2006
NSN 5996-00-021-5624
NSN 7035-00-020-2227