CONFAST Hex Head Concrete Screws, often called “blue screw” due to their blue coating that helps to resist rust, are designed to be used when the screw head can protrude above the surface of the item ...

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Shoulder screws, also known as shoulder bolts and stripper bolts, are machine screws with an integral shoulder or journal between the head and thread. Although they are not readily available in local ...

The cut off piece of hex key must be square to use as a broach. Run the hex-key broach into the workpiece to produce a hexsocket pattern. A finished lefthand 1/4-20 screw with custom head made using ...