BS 1157:1975

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Books

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BSI

Recommendations for tapping drill sizes for use with fluted taps|Cutting tools, Dimensions, Thread pitch, Size, Whitworth screw threads, ISO metric threads, Taps (threading), R-series screw threads, Unified screw threads, Threads, Pipes, Threading tools, Drills, G-series screw threads, British Association screw threads

186 GBP