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Small-Bolt Torque-Tension Tester

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Bolts as small as #0–80 can be tested.

Current torque-tension measurement techniques involve using load washers as the force measuring transducer. The disadvantage of load washers is that they are too large to be used with fasteners smaller than about size #8. The device described here measures the torque-tension relationship for fasteners as small as #0.

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