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Back-spotfacing counterbores Group A = machining ∅12→26 |
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Back-spotfacing counterbores Group B = machining ∅16→34 |
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Back-spotfacing and forward-spotfacing counterbores Group C = machining ∅24→41 |
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Back-spotfacing and forward-spotfacing counterbores Group D = machining ∅34→60 |
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Back-spotfacing and forward-spotfacing counterbores Group E = machining ∅60→80 |
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Back-spotfacing and forward-spotfacing counterbores Group F = machining ∅82→125 |
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