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 6685-01-065-5797
NSN 6135-01-468-6491
NSN 6685-00-779-8211
NSN 6105-00-723-3413
NSN 6685-01-143-4898
NSN 5855-01-069-4742
NSN 5855-01-338-1718
NSN 5915-01-522-7416
NSN 6130-01-431-4215
NSN 5960-00-405-8369
NSN 4140-00-435-0436
NSN 6105-01-025-4080