Exam 11: Fasteners and

External threads should have a lead in chamfer for tooling. Give the general guideline for the applied chamfer diameter for this application.

Define the screw thread terms given in questions -Major diameter

Describe spring index and explain what the spring index is a factor in determining.

Give the drawing angle that is recommended for represent- ing a taper pipe thread.

What are rivets used for, and how are they applied?

What are set screws used for?

Define the screw thread terms given in questions -Fit

Define the screw thread terms given in questions -Minor diameter

What is the principal application for keys?

Define the screw thread terms given in questions -Thread

What thread representation is most commonly used and why?

Why should an internal tap be deeper than the fastener thread?

Identify the components of the following unified screw thread note.

Define runout.

Define the screw thread terms given in questions -Threads per inch

Give the general rule that can be used when designing the and sPrings Problems minimum tool runout for external threads.

Identify and name the national standard that provides de- tailed descriptions, drafting practices, and examples of most common springs used in manufacturing.

Give the basic function of a torsion spring.

Bottoming taps generally have how many lead in chamfers?

Define keyseat.