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A. It is a roller set for R60 and R110 thread reform tools, designed to repair 12 threads per inch unified external threads.
A. They use it when refurbishing coarse unified threads with a 12 tpi pitch on shafts, studs or other components.
A. The rollers are installed according to the layout for 12 tpi threads as specified by Sykes Pickavant’s pitch chart.
A. The coarse pitch demands rollers that match the wide spacing and profile of the thread to reform it correctly.
A. The set comes in a compact pack roughly 50 x 50 x 50 mm for convenient handling and storage.
A. Yes, provided the threads are 12 tpi and within the diameter range supported by the reform tool.
A. They should use a tpi gauge, confirm 12 tpi and then choose the corresponding roller set number.
A. It restores threads while preserving original material, helping maintain structural integrity and fit.
A. Clean them, lightly oil the surfaces and store them separately from other pitch sets.
A. Yes, wherever 12 tpi unified threads exist and the reform tool can be applied safely."
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