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 6240-00-416-6140
NSN 6610-01-169-1197
NSN 2925-01-515-1755
NSN 5996-00-622-1546
NSN 5985-01-634-0635
NSN 5910-00-121-9876
NSN 6110-01-143-0742
NSN 6650-01-502-9909
NSN 6620-01-052-2773
NSN 5925-01-445-6112
NSN 5910-00-081-8829
NSN 2925-01-147-6688