On the following tap size 1/2 in. -13 UNC-2B , identify thread meaning for 1/2 in.? c. Coarse or Fine f. Internal a. Major diameter b. Number of threads per inch of length e. External d. Class of thread

For the given tap size in. -13 UNC-2B, let's identify the meaning of each component:1. ** in.**: - **a. Major diameter**: This indicates the major diameter of the thread, which is inch.2. **13**: - **b. Number of threads per inch of length**: This specifies that there are 13 threads per inch.3. **UNC**: - **C. Coarse or Fine**: "UNC" stands for Unified National Coarse, indicating that it is a coarse thread.4. **2B**: - **d. Class of thread**: The "2B" designation refers to the class of fit for internal threads. Class 2B is a standard fit for general-purpose applications.5. **Internal vs. External**: - **f. Internal**: The "B" in "2B" indicates that this is an internal thread (such as a nut or tapped hole).Therefore, the meanings are as follows:- in.: Major diameter- 13: Number of threads per inch of length- UNC: Coarse thread- 2B: Class of thread (internal)- Internal: Indicated by "B" in "2B"