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BSW Whitworth Sockets

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BSW Whitworth Sockets are an old size, but still stocked

British Standard Whitworth...

BSW Whitworth Sockets are an old size, but still stocked

British Standard Whitworth (BSW) is one of a number of imperial-unit-based screw thread standards which use the same hexagonal bolt head and nut sizes, the others being British Standard Fine thread (BSF) and British Standard Cycle. These three are collectively called Whitworth threads.

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