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 5990-00-234-9136
NSN 5999-01-442-4750
NSN 5960-00-009-4381
NSN 5855-01-225-5855
NSN 5910-01-025-8502
NSN 2925-00-710-6161
NSN 5930-00-408-8789
NSN 2925-00-099-4030
NSN 6610-01-561-4139
NSN 7035-01-359-7460
NSN 5915-01-459-6505
NSN 6150-01-331-9860