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Stop bolts turning with nuts

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Hytorc has invented what is said to be an inexpensive washer that stops bolts from turning along with the nut.

The invention converts torque to straight axial bolt stretch makes the nut turning-friction and the bolt load more predictable.

To put it to test, the Wood Group in the UK performed an accuracy study.

According to the company, the Group revealed that the washer was first to meet the official standard for critical flanges, a preferred bolt stretch tolerance of +/-10%, while eliminating reaction arm, backup tool and elongation measurement.

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