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 5950-01-419-1413
NSN 6150-01-523-7567
NSN 5905-01-472-9108
NSN 6685-00-621-2906
NSN 6150-00-099-6919
NSN 5895-01-319-7655
NSN 6220-01-397-5678
NSN 5915-01-113-6834
NSN 5920-00-357-0260
NSN 7035-01-224-5165
NSN 5915-01-100-3652
NSN 5895-01-148-3833