Thumb Screws - Plain - BSW

A thumbscrew resembles a threaded bolt that has a thin, flat head that enables it to be turned with the thumb and index finger.

The head of a shoulderless thumbscrew is larger than that off the shouldered version.

Shoulderless thumbscrews are available with a metric coarse head with a zinc plated finish.

We also currently have a small number of thumbscrews with a BS Whitworth imperial thread, in a self-coloured steel finish.

BSW (British Standard Whitworth) is an imperial coarse thread first used in standard production by Joseph Whitworth during the industrial revolution. Whilst it is still used in engineering applications all across the world it is less common in the UK where metric threads have generally taken over.

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