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 2925-00-253-0643
NSN 5895-01-143-7888
NSN 5996-01-601-4199
NSN 2925-01-380-0869
NSN 2925-01-456-6010
NSN 5965-01-247-5696
NSN 5965-01-232-6509
NSN 6130-01-512-9572
NSN 6685-00-429-0514
NSN 5915-01-388-2911
NSN 6240-01-296-3975
NSN 5895-01-431-1558