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 7035-01-608-4277
NSN 5910-00-584-4614
NSN 6135-01-425-5553
NSN 6130-01-249-6447
NSN 5915-01-346-7186
NSN 5915-01-046-8139
NSN 6130-00-062-6087
NSN 5950-00-216-7548
NSN 5925-01-019-9703
NSN 6650-01-108-2948
NSN 6105-01-644-8370
NSN 5935-01-343-1299