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 6610-01-461-8180
NSN 2925-01-471-4912
NSN 5930-01-144-2157
NSN 6685-00-150-7080
NSN 5905-00-104-8587
NSN 6240-00-030-5148
NSN 5945-01-147-5377
NSN 6150-01-563-1045
NSN 5990-01-147-5225
NSN 2925-01-394-5650
NSN 5998-00-419-0425
NSN 6610-01-178-5435