Exam 11: Fasteners and

Name the type of tap that is the most commonly used pro- duction tool for thread forming.

Why is it common, when possible, to drill deeper than the intended depth of the tap?

What are retaining rings used for?

Give the specifi cations for a reasonable chamfer or counter- sink on the pilot hole. ChaPTer 11 FasTeners

What assumption is made about the thread if LH is not placed at the end of the thread note?

Define self-clinching fastener.

Identify two applications for washers.

Define the screw thread terms given in questions -Die

Name and describe three types of taps.

Define the screw thread terms given in questions -Tap drill

What does a thread chamfer or countersink in the pilot hole help prevent?

Give three reasons why through threaded holes are pre- ferred over blind threaded holes from a manufacturing standpoint.

Identify two functions of thread inserts.

Define the screw thread terms given in questions -Tap

Discuss why the schematic spring representation is not as commonly used as the detailed spring representation.

Define blind hole.

List the three major functions of pipe threads.

Standard thread forming tools generally have lead in cham- fers that produce how many incomplete threads on the leading edge of the tool?

Define spring pitch.

Define the screw thread terms given in questions -Axis