Activity 12-5 Core Bit Ext. Blank Study Guide
Activity 12-5 Core Bit Ext. Blank Refer to Activity 12-5
Study the drawing and familiarize yourself with the notes. Read the questions, refer to the print, and write your answers.
1. How long are the two flats shown on the print?
The two flats are each 0.1875 inches long.
2. What is the maximum allowable total length of the part?
The maximum allowable total length of the part is 7.5 inches.
3. What size is the groove diameter?
The groove diameter is 0.5625 inches.
4. What size chamfer is used on the thread?
The chamfer size is 0.0625 inches.
5. How wide is the groove?
The width of the groove is 0.1875 inches.
6. Is there a fit designated for the thread? If yes, what is it?
There is no fit designated for the thread.
7. What is dimension A?
Dimension A is 0.6875 inches.
8. What is the low limit for the smallest diameter shown on the print?
The low limit for the smallest diameter shown on the print is 0.678 inches.
9. What note refers to the external groove on the print?
Note 2 refers to the external groove on the print.
10. Determine dimension B.
Dimension B is 0.375 inches.
11. What is the vertical distance between the two flats?
The vertical distance between the two flats is 0.250 inches.
12. What does N.T.S. mean?
N.T.S. means "not to scale."
13. What is the outside diameter of the part?
The outside diameter of the part is 0.750 inches.
14. What is revision C?
Revision C is the latest revision of the print.
15. Does this part feature any internal grooves?
Yes, this part features two grooves.
16. What is the number of the material used for the part?
The number of the material used for the part is 49-24-6004.
17. What engineering change order initiated Revision B?
Engineering change order 45 initiated Revision B.
18. What kind of shoulder is found between the 5625 diameter and the .681/.678 diameter?
The shoulder between the 5625 diameter and the .681/.678 diameter is a chamfer.
19. Determine dimension C.
Dimension C is 0.625 inches.
20. How many centerlines are found on the print?
There are 3 centerlines found on the print.
Question: How are the two flats used in the part design? Answer: The two flats are located on the end of the part and are 0.1875 inches long. They are used to provide a surface for the part to rest on when it is being machined.