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 4140-00-849-9295
NSN 5920-00-584-4592
NSN 5990-01-389-1196
NSN 4140-01-046-4932
NSN 5999-01-535-6377
NSN 5985-01-344-6488
NSN 5998-00-132-4256
NSN 6220-01-321-7088
NSN 6220-01-357-9891
NSN 6130-00-714-6275
NSN 5920-01-152-7035
NSN 6610-01-129-1053