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A. It is a roller set for R60 and R110 tools, designed for British threads with 11 threads per inch pitch.
A. They select it when repairing 11 tpi BSW, BSF, BSPP or BS external threads on larger threaded assemblies.
A. The rollers are fitted following the configuration for 11 tpi British threads detailed in the tool instructions.
A. The coarse spacing and distinct form demand rollers shaped precisely to restore the threads accurately and safely.
A. The set is supplied in a container approximately 50 x 50 x 50 mm, labelled with pitch and thread series.
A. Yes, provided the threads lie within the R60 or R110 tool’s diameter range and match the relevant British profile.
A. They should measure pitch at 11 tpi using a gauge and verify visually that the profile corresponds to a British thread form.
A. It restores damaged threads on valuable components, avoiding the need for replacement and preserving original alignment.
A. Clean them, apply a light film of oil and store them with other British roller sets to prevent mix-ups.
A. Yes, wherever 11 tpi British threads need restoration within the capabilities of the reform tools."
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