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: Nuts of iron or steel
NSN 4140-01-218-8620
NSN 5999-00-394-4540
NSN 6620-00-916-3134
NSN 6620-00-043-6082
NSN 5925-00-681-3616
NSN 5930-00-129-6675
NSN 4140-01-345-7808
NSN 5998-01-480-0007
NSN 5910-01-474-7968
NSN 5930-01-008-1486
NSN 5925-01-374-9249
NSN 6620-01-412-0938