Question 1

Rolled screw threads are larger than the shank of the bolt (the area between the thread and the head of the bolt).

Accepted Answer

Rolled screw threads are formed by rolling the material of the bolt, which results in a larger diameter than the shank of the bolt.

Question 2

____ are used to make or enlarge holes in metal and to help remove broken fasteners.

Accepted Answer

Drill bits are specifically designed for making or enlarging holes in various materials, including metal. They can also be used in the process of removing broken fasteners by drilling out the material around the fastener.

Question 3

When a screw thread is stripped, a better repair is to use a(n) ____________________ to preserve the original thread size.

Accepted Answer

thread insert

Question 4

____________________ washers are hard on the surface only; the core of the washer is soft and will compress, allowing the connection to lose clamping force.

Accepted Answer

The answer of ____________________ washers are hard on the surface...

Question 5

A(n) ____________________ is an externally threaded fastener that is used with a nut.

Accepted Answer

The answer of A(n) ____________________ is an externally threaded fastener...

Question 6

An antiseize compound is used where a bolt might become difficult to remove after a period of time.

Accepted Answer

Antiseize compounds are applied to threads of bolts and screws to prevent seizing, galling, and corrosion, making them easier to remove after being in place for an extended period.

Question 7

While discussing drill bits, Technician A says that a drill bit that is sharpened "off center" will drill a hole that is too small. Technician B says that it will drill a hole that is too large. Who is correct?

Accepted Answer

A drill bit that is sharpened "off center" will drill a hole that is too large because the bit will not be able to cut through the material evenly.

Question 8

All of the following are types of retaining rings EXCEPT:

Accepted Answer

Pop rivets are not a type of retaining ring; they are a type of fastener used to join materials together. Retaining rings, such as spiral types, snap rings, and lock rings, are used to secure components on shafts or within bores.

Question 9

All of the following statements are true EXCEPT:

Accepted Answer

The answer of All of the following statements are true...

Question 10

A tap drill usually provides about 15% of a full thread.

Accepted Answer

A tap drill typically provides the hole needed for tapping, which aims for 50-75% of the full thread depth, not just 15%.

Question 11

To anneal metal, it is heated to a specific temperature and then quenched.

Accepted Answer

To anneal metal, it is heated to a specific temperature and then slowly cooled, not quenched. Quenching is used in other heat treatment processes like hardening.

Question 12

While having a discussion about fasteners, Technician A says that to anneal a metal, it is heated to a specific temperature and then quenched. Technician B says that to anneal a metal, it is heated and allowed to cool slowly. Who is correct?

Accepted Answer

Technician B is correct because annealing involves heating a metal to a specific temperature and then allowing it to cool slowly to remove internal stresses and make the metal softer and more workable. Quenching, as mentioned by Technician A, is a different process used to harden metal by rapid cooling.

Question 13

Studs are MOST-Likely to be found on:

Accepted Answer

Studs are commonly used on carburetor mounts to facilitate the easy installation and removal of the carburetor. They provide a secure method to attach the carburetor to the intake manifold.

Question 14

A(n) ____________________ is used to cut internal threads in a previously drilled hole or to chase (clean) existing threads.

Accepted Answer

The answer of A(n) ____________________ is used to cut internal...

Question 15

A bolt becomes fatigued from working back and forth when it is too loose. The problem is MOST-Likely to occur when the assembly is not properly:

Accepted Answer

The problem of a bolt becoming fatigued from working back and forth is most likely to occur when the assembly is not properly torqued. Proper torque ensures that the bolt is tightened to the correct specification, preventing it from becoming loose and moving back and forth, which can lead to fatigue.

Question 16

Torsion breaks are LEAST-Likely to be caused by:

Accepted Answer

The answer of Torsion breaks are LEAST-Likely to be caused...

Question 17

____________________ are used in some applications to prevent a pin, such as a piston pin, from sliding out of position.

Accepted Answer

The answer of ____________________ are used in some applications to...

Question 18

Which of the following is LEAST-Likely to be the HS drill speed when drilling mild steel?

Accepted Answer

The answer of Which of the following is LEAST-Likely to...

Question 19

Every 0.001" of bolt relaxation will cause a loss of about 30,000 psi of clamping force.

Accepted Answer

Bolt relaxation, even as small as 0.001 inches, can significantly reduce the clamping force, approximately by 30,000 psi, due to the loss of preload in the bolted joint. This is a general estimation used in engineering to account for the effects of bolt relaxation on joint integrity.

Question 20

____ are used to make external threads on a round rod.

Accepted Answer

The answer of ____ are used to make external threads...

Quiz 7: Hardware, Fasteners, Drills, and Thread Repair