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 5895-01-492-5962
NSN 6220-01-386-6334
NSN 5855-00-532-0025
NSN 5920-01-109-9998
NSN 5935-01-084-6388
NSN 6610-01-487-6102
NSN 2925-00-902-3881
NSN 4140-01-088-7512
NSN 5975-00-004-9431
NSN 6320-01-442-8604
NSN 5960-01-310-3863
NSN 5990-01-633-9503