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A. It is a roller set for R60 and R110 thread reform tools, designed for unified threads with 20 threads per inch.
A. It is selected when repairing external unified threads of 20 tpi on shafts and fasteners used in many industrial applications.
A. The rollers are fitted into the reform head in the pattern specified for 20 tpi, replacing any previous pitch set.
A. Each pitch has specific spacing and geometry, so using the correct roller set ensures the thread is reshaped accurately.
A. The set is supplied in a compact pack around 50 x 50 x 50 mm.
A. It may be used wherever the external thread form and 20 tpi pitch align with the roller design and tool capability.
A. Use a thread gauge marked in threads per inch to verify that the pitch is 20 tpi.
A. It restores threads without cutting material away, helping maintain strength and fit when new parts are not immediately available.
A. Clean them thoroughly, apply light oil and keep them in their labelled container with other unified pitch sets.
A. Yes, whenever R60 or R110 thread reform tools are used in maintenance work on unified 20 tpi threads."
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