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 5835-01-363-4527
NSN 5910-01-497-5676
NSN 5960-01-502-3268
NSN 5975-01-115-3877
NSN 5925-00-081-9135
NSN 5905-00-582-1356
NSN 5945-01-072-7114
NSN 5985-00-617-3540
NSN 6105-01-645-0680
NSN 5925-00-262-6087
NSN 6145-01-459-7436
NSN 5905-01-004-9961