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 4140-01-425-1607
NSN 6240-01-085-3403
NSN 5965-01-260-9551
NSN 6645-01-098-1179
NSN 5915-01-116-5548
NSN 5835-00-111-3419
NSN 6135-01-377-5729
NSN 6150-00-155-8511
NSN 5975-01-363-6462
NSN 5920-01-525-9761
NSN 5920-01-044-5621
NSN 6220-01-386-6172