13.
A/C screws are usually manufactured with
a. Class 1 fit for threads
b. Class 2 fit for threads
c. Class 3 fit for threads
d. Class 4 fit for threads
14. In the four digit aluminum system number 1100 identifies what type of aluminum
a. Aluminum alloy containing 11% copper
b. Aluminum alloy containing zinc
c. 99% commercially pure aluminum
d. None
15. AN clevis bolts are used in only for type of load application
16. Under which of the following condition (s) should lock washers be never used
a. When the structure is soft
b. Where failure permits airflow
c. Where exposed to corrosion
d. All of the above
17. A/c bolts are generally identified by the marking on the head, which indicate
a. _____________
b. _____________
c. _____________
18. Give names of at least 4 different types of special purpose bolts with their application
i. _____________
ii. _____________
iii. _____________
iv. _____________
19. Which one of the following is used for minor adjustment of cable length & cable tension.
a. Control cable
b. Turn lock fastens
c. Turn buckles
d. Cotton pins
20. ____________________ are used to prevent fluid from passing a certain point.
1. The basic difference between solid shank rivet and blind rivet is that
A. Head design B. Hole design to accommodate them
C. Way of driving them D. None
2. a rivet which has a diameter 1/8 inch and length of ¼ inch further more it
has a head marking of two raised dashes and universal head type. Which one
of the following code describes the above rivet?
A. AN470-DD4-4 B.AN470-AD4-8
C.AN470-B8-4 D. none
INSTRUCTOR: GETU -2
Aircraft Hardware (Fasteners; Rivets, Bolts and Nut)
1. What are the three methods of permanently securing nuts on bolts
- Safety wire
- Lock washers
- Special nuts
2. Which of the following types of fit is tight
A. Class 2
B. Class 5
C. Class 1
D. Class 3
3. Which one of the following is false about blind revet
A. Blind rivets are installed with access with only one end of the rivet
B. Blind rivets are considerably more expensive than solid shank rivets
C. All blind rivets cannot substitute solid shank rivets size to size
D. None
4. Which one of the following is false?
A. Close tolerance bolts are sometimes called external wrench bolts
B. It is always good practice to use washers under both bolt heads and nut
C. Self locking nuts rely on cotter pins
D. Combined thickness of metals joined can be equal to the bolt grip length
5. Which one of the following is not blind rivet
A. Cherry max
B. Huck lock
C. Solid shank
D. Cherry lock
6. A drilled head engine bolt has a diameter of ¼ “ and a length of one and half inch bolt has a
course thread. What is the AN code of the bolt?
A. AN74-24
B. AN24-74
C. AN4-24A
D. AN74A24
7. Which one of the following is true?
A. Pop rivets are used in structural repairs
B. Friction lock rivets are provided with locking ring
C. Huck lock rivets have structural application
D. Rivets are not threaded
8. Which one of the following is not true about mechanical lock rivets?
A. Huck lock rivets is not included in the mechanical lock rivets
B. Desired to prevent the portion of the center stem from falling out as a result of
vibration encountered during aircraft operation
C. Permanently locks the stem in to place and vibration can not shake it loose
D. None
9. One of the following is not true about Clevis bolts
A. Short portion of the shank is threaded and there is a small notch between the
threads and the shank
B. The diameter and length is given in 1/16 inch increment
C. Has a domed head and typically slotted to accept screw driver
D. None
10. Which one of the following is correct?
A. A crown flash rivet makes allows for head to gun set contact
B. 1100 Aluminum alloy (D) is most widely used in aircraft
C. Blind rivets need access to both ends of the rivet
D. Hi-Shear rivets are not made from steel Alloy
11. ……………….Rivets are often called icebox rivets as they become hard when they warm up
to room temperature
A. D C. B
B. AB D. None
12. Which one of the following identifies a type of nut
A. AN 310 C. AN 470
B. MS 20024 D. None
13. Which one of the following is true?
A. Nylon self locking nuts are made of two materials
B. Structural screws are a type of mechanical screws and can be used as structural
bolts
C. AN3-AN20 are drilled head engine bolts
D. Bolts with drilled shanks have letter A at the end of the specification
14. Joints utilizing countersunk rivets generally luck the strength of protruding head rivet joints.
Why?
A. Counter sunk rivets are made of less strong materials
B. The portion of the material being riveted is cut away to allow for counter sunk
head
C. The gun set may not make direct contact with the rivet head if the hole is not
properly countersunk
D. None of the above
15. Which one of the following is not true about mechanical lock rivets?
A. Huck lock rivets are not included in the mechanical lock rivets
16. Which one of the following rivet is used for attaching deicer bolts?
A. Huck lock
B. Cherry lock
C. Rivnut
D. Olympic lock
17. Which material is AN12-17A made of
A. Cadmium plated Nickel alloy
B. 2020 Aluminum alloy
C. Plain steel
D. A and B
18. One of the following can form threads in the mating part
A. Machine screw
B. Self locking screw
C. Structure screw
D. All of the above
19. Which one of the following is not true about nuts
A. All nuts used in aircraft construction must have some sort of locking devices to
prevent them from falling off
B. Self locking nuts locks on to a bolt on its own
C. Non self locking nuts rely on cotter pin, chuck nut or lock washer
D. None
20. Which of the following is false?
A. AN and MS standards are commonly used for aircraft fasteners
B. AN5-22 has length of 22/8 or 2 ¾ inch
C. AN 186 is a close tolerance bolt
D. The combined thickness of metals joined may equal the grip length of the bolt
21. A rivet which has a diameter 1/8” and length ¼” , further more it has head marking of two
raised dashes and universal head type. Which of the following codes describes the rivet:
A. AN470-DD4-4
B. AN470-AD4-8
C. AN470-B8-4
D. None
