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.)
NSN 6620-01-022-9868
NSN 4140-00-274-9638
NSN 5945-01-300-0433
NSN 6685-01-014-9402
NSN 5925-00-079-7401
NSN 6240-00-486-8447
NSN 5975-01-591-0329
NSN 4140-00-888-9836
NSN 5895-00-288-1798
NSN 5905-01-524-8909
NSN 6105-00-617-9331
NSN 5925-01-410-8515