Machine Design

CHAPTER 9

Threaded Fasteners

Chapter Objectives

1. Identify the type of the fastener required for a given application.

2. Calculate the initial preload required on a bolt for given tensile stress area and minimum proof strength.

3. Determine the size and type of washer required for the given assembly.

4. Determine the size of the uniform bolt for a given shock-load application.

5. Calculate the torque coefficient for bolts and washers, and coefficients of friction between threads, and between washer face and nut.

6. Calculate the total torque required from initial preload, bolt diameter and torque coefficient.

7. Determine bolt stiffness and plate stiffness for a given assembly, and calculate the load shared by bolt and plates.

8. Determine final tensile load ...