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 6110-00-957-3939
NSN 5965-01-406-4164
NSN 6645-00-382-8994
NSN 6150-01-367-1923
NSN 5975-01-116-2115
NSN 5920-01-282-3723
NSN 7035-00-371-7749
NSN 6685-00-378-9888
NSN 7035-00-830-1235
NSN 5930-01-116-2944
NSN 2925-01-469-8229
NSN 5990-01-449-7090