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A. It is a three-piece R16 roller set for 20tpi UNC, UNF and UNEF threads, intended for use with the 01421600 thread reformer.
A. When repairing UNC/UNF/UNEF fasteners whose pitch has been identified as 20 threads per inch.
A. Store it labelled “UNC/UNF/UNEF 20tpi” alongside other pitch-specific packs.
A. Accurate pitch alignment ensures rollers track existing grooves properly, avoiding new damage.
A. It enables the reforming of worn or damaged imperial threads, reducing the need for new fasteners.
A. Remove swarf after use, protect from moisture and check for surface damage regularly."
A. It supports imperial UNC, UNF and UNEF threads at 20 threads per inch.
A. It is used with the Silbertool 01421600 thread reformer body.
A. It measures around 53 x 15 x 17mm and weighs roughly 0.019 kilograms.
A. No, it is specifically for UNC/UNF/UNEF threads and must not be used on other standards.
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