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TENSION TESTERS DESCRIPTION:
Bolt Tension Calibrators are designed exclusively for calibrating impact
wrenches (and other types of installation tools) and testing high-strength fasteners used on structural steel. Each calibrator is essentially a hydraulic load cell with a hole in the center for inserting a sample bolt, nut and washer. As the bolt and nut are tightened, they compress the load cell, creating internal hydraulic pressure. A gage measures the pressure and provides a dial readout calibrated in pounds-tension equivalent to the tension created in the fastener.
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