Cutting Tools P11b

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Cutting Tools P11b

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Screw threads have many dimensions. It is important in modern manufacturing to have a working knowledge of screw thread terminology. A ‘righthand thread’ is a screw thread that requires right-hand or clockwise rotation to tighten it. A ‘left-hand thread’ is a screw thread that requires left11.3.2 Types of Taps hand or counterclockwise rotation to Taps are manufactured in many tighten it. ‘Thread fit’ is the range of sizes, styles and types. Figure 11.11 tightness or looseness between extershows some of the taps discussed benal and internal mating threads. low. ‘Thread series’ are groups of diameter Hand Taps: Today the hand...

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