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 5965-00-504-6753
NSN 6135-00-248-4102
NSN 5915-01-633-9845
NSN 6105-01-146-5749
NSN 6645-00-764-3355
NSN 6620-01-462-0001
NSN 4140-00-205-6491
NSN 5910-01-263-9221
NSN 6150-00-848-0359
NSN 6685-00-753-7668
NSN 2925-00-964-7128
NSN 5910-00-167-1728