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A. It is a three-piece R16 roller set for British thread forms with a coarse tpi, used with the Silbertool 01421600 thread reformer.
A. It indicates a British standard pitch around 14 threads per inch, used with R16 rollers; the part name uses “4tpi” textually.
A. It supports BSW, BSF, BSPP and BS thread types at the stated pitch.
A. They are intended to be used with the Silbertool 01421600 thread reformer.
A. When restoring coarse British threads of the specified pitch using the Silbertool thread reformer.
A. No, it is designed for British form threads and should not be used on metric fasteners.
A. Store it in a labelled container, indicating its part number and intended tpi.
A. Incorrect pitch could damage threads rather than repair them, so matching pitch is essential.
A. They allow efficient repair of many thread types using a single reformer body with interchangeable rollers."
A. The pack is about 53 x 15 x 17mm and weighs roughly 0.019 kilograms.
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