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 6130-01-463-8672
NSN 5960-01-022-7322
NSN 5835-00-155-1379
NSN 5855-00-951-6483
NSN 5915-01-042-0568
NSN 6150-01-551-1266
NSN 6135-01-167-7604
NSN 5915-00-286-3272
NSN 5920-01-464-3863
NSN 6620-00-905-6590
NSN 6610-00-798-8562
NSN 5975-01-049-8818