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 5915-00-661-2223
NSN 5975-00-947-9960
NSN 5975-01-367-6059
NSN 6145-01-008-3166
NSN 5950-00-155-4753
NSN 6320-01-006-6138
NSN 6685-01-183-9634
NSN 5998-00-716-7638
NSN 5996-00-186-8709
NSN 6645-01-116-9634
NSN 5965-01-267-5263
NSN 6135-01-040-1446