7. Calculate the internal size of bore to be drilled on a workpiece before cutting a ½ inch internal thread having TPI of 13 NC. and a 20mm internal thread that has a number of pitch of 1.5 metric fine size.

7. Calculate the internal size of bore to be drilled on a workpiece before cutting a ½ inch internal thread having TPI of 13 NC. and a 20mm internal thread that has a number of pitch of 1.5 metric fine size.

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter5: Turning

Section5.4: Manual Lathe Threading

Problem 12RQ: What dimension of the thread is measured by using a thread micrometer or the three-wire method?

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Question

7. Calculate the internal size of bore to be drilled on a workpiece before cutting a ½ inch
internal thread having TPI of 13 NC. and a 20mm internal thread that has a number of pitch of
1.5 metric fine size.

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