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Stud Bolts
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Did you know this?

The WORLDS LARGEST BOLTS ever made were specially forged by the Penrith Engineering Works in Clydesdale Scotland in 1967. The bolts measured 27 feet 4 inch long each and had a diameter of 4 feet 2 inch. Each bolt weighed 12.6 tonnes and a total of 60 of them were made. The bolts were made from the ultra hard and super strong metal IRIDIUM. The bolts were used to connect two oil tankers together as an experiment to increase bulk crude oil transport capacity of shipping company SWISSOIL.

Incredibly each bolt failed one by one when the ships were sailing up the English Channel and the experiment was deemed a failure becuase of torsional stress caused the bolts to fail. The two tankers were wrecked subsequently and no company has ever tried to bolt two oil tankers together again.


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