Question 1

All of the following should be done in the process of removing a broken bolt, EXCEPT:

Accepted Answer

Using a self-tapping screw to drill out the old fastener is not a recommended method for removing a broken bolt, as it can damage the threads and make removal more difficult.

Question 2

Technician A states that the aim of thread repair is to restore the thread to a condition that restores the fastening integrity. Technician B states that thread repairs can only be performed on internal threads. Who is correct?

Accepted Answer

Technician A is correct because the goal of thread repair is indeed to restore the thread to a condition that maintains the fastening integrity. Technician B is incorrect because thread repairs can be performed on both internal and external threads.

Question 3

Thread repairs can be performed on internal threads, such as in a(n) _________, or on external threads, such as on a bolt.

Accepted Answer

Thread repairs can be performed on internal threads in various components like housings, engine blocks, and cylinder heads, as well as on external threads like bolts.

Question 4

If a bolt is broken off flush with a surface, and the bolt is large enough in diameter, then you may be able to use a small ________ to turn the bolt by tapping on the outside diameter of the bolt, but in the reverse direction.

Accepted Answer

A center punch can be used to create a small indentation on the bolt, allowing you to tap it in the reverse direction to help remove it.

Question 5

If the threads of a fastener are not too badly damaged, such as when the outer thread is slightly damaged from being started crooked (cross-threaded), then a _________.

Accepted Answer

A thread file can be used to clean up slightly damaged threads, making it unnecessary to replace the bolt or nut if the damage is not severe.

Question 6

Thread repair is used in situations where it is not feasible to replace a damaged thread. Technician A states that this may be because the damaged thread is located in a large expensive component. Technician B states that this may be because replacement parts are expensive or not available. Who is correct?

Accepted Answer

Both Technician A and Technician B are correct. Thread repair is often used when the damaged thread is part of a large, expensive component or when replacement parts are costly or unavailable.

Question 7

All of the following are ways to avoid breaking a bolt when removing it except:
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Accepted Answer

Applying maximum force in both directions can increase the risk of breaking a bolt, especially if it is rusted or corroded. The other options are methods to help safely remove a bolt without breaking it.

Question 8

Tech A says that a common method for repairing damaged internal threads is a thread insert. Tech B says that a thread file is used to repair the threads on the inside of a bolt hole. Who is correct?

Accepted Answer

Tech A is correct because a thread insert is a common method for repairing damaged internal threads. Tech B is incorrect because a thread file is typically used for external threads, not internal ones.

Question 9

Tech A says that if a bolt breaks off above the surface, you might be able to remove it using locking pliers or curved jaw Channellock pliers. Tech B says that a hammer and punch can sometimes be used to remove a broken bolt. Who is correct?

Accepted Answer

Both Tech A and Tech B are correct. Locking pliers or curved jaw Channellock pliers can be used to grip and turn a bolt that is broken off above the surface. A hammer and punch can also be used to try and turn or loosen a broken bolt by tapping it in the direction of removal.

Question 10

Tech A says that when using a Heli-Coil to repair a damaged thread, the Heli-Coil is welded into the bolt hole. Tech B says that when using a solid sleeve type of insert, the damaged threads need to be drilled out with the correct size drill bit. Who is correct?

Accepted Answer

Tech B is correct because when using a solid sleeve type of insert, the damaged threads must be drilled out to accommodate the insert. Tech A is incorrect because a Heli-Coil is not welded into the bolt hole; it is threaded into place.

Question 11

________ are designed to secure parts that are under various tension and sheer stresses.

Accepted Answer

Threaded fasteners are specifically designed to secure parts that are under various tension and shear stresses, providing a mechanical means of holding components together.

Question 12

A _______ is a cylindrical piece of metal with a hexagonal head on one end and a thread cut into the shaft at the other end.

Accepted Answer

A bolt is described as a cylindrical piece of metal with a hexagonal head on one end and a thread cut into the shaft at the other end.

Question 13

In the standard system, bolts, studs, and nuts are measured in _________.

Accepted Answer

In the standard system, bolts, studs, and nuts are typically measured in threads per inch (TPI).

Question 14

Technician A states that when using a torque angle gauge, you should place it over the head of the bolt, and then put the torque wrench on top of the gauge and zero it, if necessary. Technician B states that if a component requires multiple bolts or fasteners, make sure to tighten them all to the same torque angle in the sequence that is specified by the manufacturer. Who is correct?

Accepted Answer

Technician A is correct about the proper use of a torque angle gauge, and Technician B is correct about following the manufacturer's specified sequence and torque angle for multiple fasteners.

Question 15

_____ are designed to provide a consistent clamping force when torqued to their yield point or just beyond.

Accepted Answer

TTY (Torque-To-Yield) bolts are designed to provide a consistent clamping force when torqued to their yield point or just beyond.

Question 16

Which of these are threaded fasteners?
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Accepted Answer

Trim screws are threaded fasteners.

Question 17

_______ is considered a more precise method to tighten TTY bolts and is essentially a multistep process.

Accepted Answer

The torque angle method is a more precise method for tightening TTY (Torque-To-Yield) bolts, involving a multistep process where bolts are initially tightened to a specific torque and then turned a specified angle.

Question 18

Two technicians are discussing bolt sizes. Tech A says that the diameter of a bolt is measured across the flats on the head. Tech B says that the length of a bolt is measured from the top of the head to the bottom of the bolt. Who is correct?

Accepted Answer

The diameter of a bolt is measured across the threaded part, not the flats on the head. The length of a bolt is measured from the bottom of the head to the end of the bolt, not from the top of the head.

Question 19

Which nut is made with a deformed top thread?

Accepted Answer

A lock nut is designed with a deformed top thread to prevent loosening due to vibration or torque.

Question 20

A bolt has 3 hash marks on its head. What is its grade?

Accepted Answer

A bolt with 3 hash marks on its head is typically a Grade 5 bolt, which is a medium-strength bolt made from carbon steel.

Quiz 4: Fasteners and Thread Repair

All of the following should be done in the process of removing a broken bolt, EXCEPT:

Technician A states that the aim of thread repair is to restore the thread to a condition that restores the fastening integrity. Technician B states that thread repairs can only be performed on internal threads. Who is correct?

Thread repairs can be performed on internal threads, such as in a(n) _________, or on external threads, such as on a bolt.

If a bolt is broken off flush with a surface, and the bolt is large enough in diameter, then you may be able to use a small ________ to turn the bolt by tapping on the outside diameter of the bolt, but in the reverse direction.

If the threads of a fastener are not too badly damaged, such as when the outer thread is slightly damaged from being started crooked (cross-threaded) , then a _________.

All of the following are ways to avoid breaking a bolt when removing it except:

Tech A says that a common method for repairing damaged internal threads is a thread insert. Tech B says that a thread file is used to repair the threads on the inside of a bolt hole. Who is correct?

Tech A says that if a bolt breaks off above the surface, you might be able to remove it using locking pliers or curved jaw Channellock pliers. Tech B says that a hammer and punch can sometimes be used to remove a broken bolt. Who is correct?

Tech A says that when using a Heli-Coil to repair a damaged thread, the Heli-Coil is welded into the bolt hole. Tech B says that when using a solid sleeve type of insert, the damaged threads need to be drilled out with the correct size drill bit. Who is correct?

________ are designed to secure parts that are under various tension and sheer stresses.

A _______ is a cylindrical piece of metal with a hexagonal head on one end and a thread cut into the shaft at the other end.

In the standard system, bolts, studs, and nuts are measured in _________.

_____ are designed to provide a consistent clamping force when torqued to their yield point or just beyond.

Which of these are threaded fasteners?

_______ is considered a more precise method to tighten TTY bolts and is essentially a multistep process.

Two technicians are discussing bolt sizes. Tech A says that the diameter of a bolt is measured across the flats on the head. Tech B says that the length of a bolt is measured from the top of the head to the bottom of the bolt. Who is correct?

Which nut is made with a deformed top thread?

A bolt has 3 hash marks on its head. What is its grade?

Quiz 4: Fasteners and Thread Repair

All of the following should be done in the process of removing a broken bolt, EXCEPT:

Technician A states that the aim of thread repair is to restore the thread to a condition that restores the fastening integrity. Technician B states that thread repairs can only be performed on internal threads. Who is correct?

Thread repairs can be performed on internal threads, such as in a(n) _________, or on external threads, such as on a bolt.

If a bolt is broken off flush with a surface, and the bolt is large enough in diameter, then you may be able to use a small ________ to turn the bolt by tapping on the outside diameter of the bolt, but in the reverse direction.

If the threads of a fastener are not too badly damaged, such as when the outer thread is slightly damaged from being started crooked (cross-threaded) , then a _________.

All of the following are ways to avoid breaking a bolt when removing it except: ​

Tech A says that a common method for repairing damaged internal threads is a thread insert. Tech B says that a thread file is used to repair the threads on the inside of a bolt hole. Who is correct?

Tech A says that if a bolt breaks off above the surface, you might be able to remove it using locking pliers or curved jaw Channellock pliers. Tech B says that a hammer and punch can sometimes be used to remove a broken bolt. Who is correct?

Tech A says that when using a Heli-Coil to repair a damaged thread, the Heli-Coil is welded into the bolt hole. Tech B says that when using a solid sleeve type of insert, the damaged threads need to be drilled out with the correct size drill bit. Who is correct?

________ are designed to secure parts that are under various tension and sheer stresses.

A _______ is a cylindrical piece of metal with a hexagonal head on one end and a thread cut into the shaft at the other end.

In the standard system, bolts, studs, and nuts are measured in _________.

_____ are designed to provide a consistent clamping force when torqued to their yield point or just beyond.

Which of these are threaded fasteners? ​

_______ is considered a more precise method to tighten TTY bolts and is essentially a multistep process.

Two technicians are discussing bolt sizes. Tech A says that the diameter of a bolt is measured across the flats on the head. Tech B says that the length of a bolt is measured from the top of the head to the bottom of the bolt. Who is correct?

Which nut is made with a deformed top thread?

A bolt has 3 hash marks on its head. What is its grade?

All of the following are ways to avoid breaking a bolt when removing it except:

Which of these are threaded fasteners?