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 4140-00-249-5603
NSN 6620-01-608-8548
NSN 5925-01-353-0351
NSN 5915-01-296-8974
NSN 5985-01-481-4580
NSN 5990-01-254-2936
NSN 4140-00-701-0406
NSN 6650-00-389-4111
NSN 5895-00-005-2945
NSN 6130-01-412-8592
NSN 5915-00-140-2886
NSN 6645-01-130-5581