Torque adapter

"No- over tighten" adapter is created from the non-return ratchet torque socket. It comprised a shaft rod and a shaft cylinder. A core shaft of shaft rod is sleeved with a mobile ratchet capable of axially moving; the shaft cylinder has a shaft slot formed for being sleeved with the core shaft. When the core shaft rotates in the shaft slot and the applied torque exceeds the preset torque value, the core shaft idly rotates in the shaft slot. It means when the demand torque is reached, continued tightening is no longer to increase the torque on the screw.