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 6240-00-141-6143
NSN 5915-01-450-0982
NSN 6110-00-218-4737
NSN 6135-01-205-5965
NSN 6240-00-123-7648
NSN 5999-01-341-5426
NSN 6620-00-193-9503
NSN 7035-01-145-5059
NSN 5920-01-634-0250
NSN 5910-00-542-2992
NSN 6135-00-299-6918
NSN 2925-00-008-5485