1. State the advantages and disadvantages of a cut nail. What causes a nail to split the wood?

Fig. 121.   Rivet Heads and Points.

Fig. 121. - Rivet Heads and Points.

2. State the advantages and disadvantages of a wire nail.

3. What advantage has a screw over a nail, as a fastening agent?

4. Explain the manufacture of screws.

5. What is a bolt?

6. Explain the construction of different screw threads.

7. What are the advantages and disadvantages of each? Draw sketches.

8. Define the following terms: thread, triple thread, pitch, lead, point, depth of a thread, root of thread, root diameter, pitch of screw, number of threads to the inch.

9. What are the uses of the different screw threads?

10. How is a thread placed in a hole?

11. What is a tap?

12. What are the standard hand-taps?

13. How would you determine the size of a tap drill for a thread?