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 5835-01-472-5239
NSN 6620-01-262-8473
NSN 5960-01-254-3541
NSN 5915-01-005-0164
NSN 4140-01-045-4112
NSN 5915-01-123-9956
NSN 7035-00-059-7970
NSN 6650-01-483-0938
NSN 6220-00-954-0442
NSN 2925-01-236-3547
NSN 5935-01-255-0298
NSN 5925-00-056-8931