470 / | HD | THREADED, HEADED FASTENER, OR WASHER MAKING: PROCESS AND APPARATUS |
1 | PROCESS {5} | |
2 | DF | .~> Assembling or disassembling fastener with element {2} |
8 | DF | .~> Making externally threaded fastener, e.g., screw or bolt {2} |
18 | DF | .~> Making internally threaded fastener, e.g., nut {5} |
27 | DF | .~> Making headed fastener, e.g., rivet or nail, etc. {2} |
41 | DF | .~> Making washer {1} |