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 6620-01-232-0680
NSN 5855-00-878-8137
NSN 5999-01-494-1911
NSN 6240-01-373-7776
NSN 6145-00-104-7789
NSN 5905-01-411-8554
NSN 6240-01-182-1895
NSN 5975-01-057-9618
NSN 5925-01-174-1562
NSN 5925-00-284-3726
NSN 6240-00-739-0961
NSN 5985-01-406-3447