| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastening method for a screw connector and its device. SOLUTION: A plurality of fluid operating torque tools to be engaged with respective connectors are used for fastening of the screw connector. A timing when at least one fluid operation torque tool reaching a point in an advancing stroke, where a pawl of a ratchet mechanism in this tool can be returned to its original position, is detected so that all the pistons of all the fluid operation torque tools are automatically drawn by responding thereto, even if a pawl of a ratchet mechanism in another tool does not reach the point possible of returned to its original position.
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