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

Question 1

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

A)Pop rivets
B)Dies
C)Lock rings
D)Pliers

Answer 1

B

Question 2

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?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Answer 2

B

Question 3

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

Answer 3

bolt

Question 4

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

Question 5

Torsion breaks are LEAST-Likely to be caused by:

A)the use of a poor grade of fastener.
B)an improper thread fit.
C)too much friction.
D)improper assembly procedures.

Question 6

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

Question 7

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

Question 8

Studs are MOST-Likely to be found on:

A)carburetor mounts.
B)fuel injection systems.
C)spark plugs.
D)sheet metal parts.

Question 9

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

Question 10

All of the following statements are true EXCEPT:

A)Drills sized by number commonly range from 80 (0.0135") to 1, which is 0.228" (almost 1/4").
B)The most widely used number-sized drills usually are numbers 1 to 60 (0.040").
C)Commonly used metric drills range from 0.20 mm to 21.00 mm in size.
D)A micrometer or a special drill gauge with holes of the specified size can also be used to determine the size of a drill bit.

Question 11

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

A)300 rpm for 1/2"
B)750 rpm for 1/2"
C)1,000 rpm for 3/8"
D)1,500 rpm for 1/4"

Question 12

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

Question 13

All of the following are types of retaining rings EXCEPT:

A)spiral types.
B)snap rings.
C)pop rivets.
D)lock rings.

Question 14

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?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

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:

A)torqued.
B)crossed threaded.
C)drilled.
D)annealed.

Question 16

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

A)Pop rivets
B)Pipe threads
C)Drill bits
D)Pliers

Question 17

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

Question 18

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

Question 19

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

Question 20

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

Question 21

How would you remove a broken fastener with a fluted extractor set?

Question 22

Briefly discuss three types of taps that are available for any thread size.

Question 23

What are the steps involved in the Heli-Coil repair method?

Question 24

Provide definitions for the following terms: tensile strength, yield point, and ultimate strength.

Question 25

How would you remove a broken bolt that has not bottomed out and a bolt that has broken off above the surface?