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 5915-00-428-7405
NSN 5999-00-139-3400
NSN 6220-00-081-6429
NSN 7035-01-013-9889
NSN 6685-01-448-4056
NSN 5835-01-116-2369
NSN 6110-00-296-0500
NSN 6220-00-351-4556
NSN 2925-00-924-1159
NSN 5999-00-181-4001
NSN 6135-01-205-5965
NSN 5950-00-258-6776