Why do some technicians use Allen keys instead of self-tapping screws to fasten joint?
It's critical to use the correct size hex key, since using one that's too large may harm the fastener or tool. To summarize, a hex key is a tool having a hexagonal socket that is used to drive nuts and screws. They are easier to use and less prone to strip than their Phillip's head equivalent since they have six driving points.
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