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 5990-01-313-5543
NSN 6320-00-480-7922
NSN 6130-01-230-3210
NSN 5835-01-558-9444
NSN 6150-01-534-3668
NSN 6105-01-123-8887
NSN 4140-00-383-8230
NSN 6145-01-562-2109
NSN 5999-00-876-5169
NSN 5990-00-435-5219
NSN 5985-01-634-0635
NSN 5999-00-709-6234