QUESTION PAPER

MODULE: 6 (Hardware and fasteners)

Q. SL MULTIPLE CHOICE QUESTION LEVEL REFERENCE
NO.
BOOK AUTHOR PAGE
NAME NO.
A special purpose bolt (clevis bolt) is used with shear
load application and never in tension it is often used
EASA 5.6
as a mechanical pin in a EASA
1. 1 M6 p-3
a) control system b)hydraulic actuators c)as a locking
pin on a revolving shaft d)none of the above
Lock bolts combines the features of a high strength
bolt and …………… 5.6
a)locking device b)self locking nut EASA p-8
EASA
2. c)rivet d)any one of the above 2
Lock bolts are manufactured by several companies
and confirm to ……………. Standard EASA EASA
a)AN B)MS 5.6
3. C)NAS D)NONE 2 p-7

3 types of lock bolts are commonly used such as pull

type ,stump type, blind type . which one of these used EASA 5.6
general method of locking rivet such as bucking bar p-8
4. 1 EASA
and hammer ?
A)pull type b)stump type c)blind type d)both 1 & 3
A non-self locking nut means
a)a nut must be safe tied after tightening
b) an external locking device must be used for safe 1
5. EASA EASA 5.8
tying after tightening
c)both are correct p-3
d)none
Threaded fasteners are generally used on those
aircraft parts which required? 5.39
6. a)quick dismantling and replacement
1
EASA EASA Last
b)frequent removal and put back together para
c)rigidity of attachment not allowing frequent removal
d ) only 1 & 2 are correct
MTICS mark the incorrect statement…
a)generally bolts are used where great strength is EASA EASA 5.39
required

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7. b)screws are also used where great strength is 2
needed
c) screws are used where strength is not the deciding
factor
d)both 1& 3 are correct
An aircraft bolt will generally have three distinct
features. One is head other one is thread and the last 5.30
one is? EASA EASA
8. a) shank b)body c) grip d)NOTA 1
The standard aircraft bolts can be identified by the
code marking on their head which generally denotes FAA FAA
9. the manufacturer and ………………
2 9A
5.41
a)the length of grip b)the diameter of the shank
c)class of fit d)NOTA
The threaded end of bolt and screw are designed by
class of fits denoted as FAA FAA
10. a)class 1,2,3 and 4 b)class a,b,c,d
1 9A 5.41
c)either 1 or 2 d)NOTA

The class 2 fit is a fit which mostly used on fabrication

of ……………….. FAA FAA
a)medium fit and used for bolts b)medium fit and
1 9A 5.41
11. used for screws
c)free fit and used for an bolts
d)free fit and used for screws
A bolt having a tight drive fit that needs a blow/struck
with a 12 to 14 ouns hammer to put into the hole, is? FAA FAA
a)structural bolt b)oversized bolt
2 9A 5.41
12. c)close tolerance bolt d)tight fit bolt
Bolts are identified by?
a)the shape of the head b)method of screwing FAA FAA
13. c)material used in fabrication d)NOTA
1 9A 5.41

Special bolts are usually identified by the letter and/or

marking stamped on the head FAA
14.
a)letter “S” *
b) an asterisk ( )mark
9A FAA
5.42
c) a raised or recessed triangle d)none

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 In the bolt part no- “AN3 DD SA” No. 3 denotes,
15. a)dia, in eighth of an inch (3/8)
1 FAA FAA
9A
b)length in eighth of an inch (3/8)
c) dia, in sixteenth of an inch (3/16)
d) length in sixteenth of an inch (3/16)
In the bolt part no- “AN3 DD SA” DD denotes,
material specification is?
16. a) AL alloy 2024T
FAA FAA
9A
b)Al alloy 2017 T 1
c)Al alloy 2117
d)Al alloy 5056

In the bolt part no- “AN3 DD SA” DD denotes,

material specification, if C is used in place of DD It
17. indicates?
FAA

a) AL alloy 2024T 1
b)cu alloy FAA
c)corrosion resistant steel
d)cadmium plated steel
NAS close tolerance bolts are marked with
a) a raised triangle
18. b) as in (a) or a recessed triangle FAA FAA
c) raised cross 1 9A 5.42
d) raised asterisk mark

Aircraft bolts are generally fabricated from three

materials. Which one of these is not use for aircraft
19. application?
1 FAA FAA
a)cadmium or zinc plated corrosion resistant steel 9A
5.42
b)unplated corrosion resistant steel
c)
d) Al alloy
JO-bolt is a trade name for a
a)lock bolt b)special purpose bolt
20. c)as in (a) for a internally threaded three piece rivet 5.43
1 FAA FAA
d)as in (b) for a internally threaded three piece 9A
rivet

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 JO-bolt is a trade name for an internally threaded three
piece rivet. Consists of a steel alloy bolt, a steel alloy FAA FAA
21. nut and a ………. 2 9A 9A 5.43
a)stainless steel sleeve b)a stainless steel lock washer
c)a stainless steel lock ring d)NOTA
Three types of lock bolts are commonly used one is
pull type ,the other blind type , the last one is FAA
22. a)Grip type b)bucked type 9A
FAA
5.43
c)stump type d)NOTA 1

Self locking nuts are used on aircraft to provide tight

connection, when?
a)when the connection is subjected to variation in
temperature FAA FAA 5.46
23. b) when the connection is subjected to variation with 2 9A
pressure fluctuations
c) when the connection is subjected to severe
vibration
d) When the connection is subjected with centrifugal
force.
Lock bolts are manufactured by many companies and
confirm to ………standard FAA
24. a)AN b)MS c)NAS d)SAE
2 9A
FAA
5.43

Aircraft nuts are divided into two general groups such

as
25. a)friction lock type and mechanical lock type
1 FAA FAA
b)self-locking type and non self locking type 9A 5.45
c)self plugging type and non-self plugging type
d)NOTA
What is a non-self locking type nut
a)those which do not need any external locking
26. devices for their safety 5.45
1 FAA FAA
b)those which need some external means for safety 9A
c)both are correct
d)NOTA

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LOCKING DEVICES

A type of stud which is used where reduction of

weight without the loss of strength is of paramount EASA
01. importance is?
1 FAA
5.15
1) waisted studs 2)stepped studs
3) shoulder stud 4)standard studs

When a standard stud hole is damaged and for

replacement, re drilling and tapping to larger size is to 5.15
02. essential, the stud can be replaced with a?
1 FAA
EASA
1) standard stud of next larger size 2) stepped stud
3) shouldered stud 4) none of the above
A type of lock washer which is used under high FAA
vibration condition and on higher heat zone than 5.17
03. other methods, but can be used only for once is?
1
EASA
1)Tab washer 2)spring washer
3)shake proof washer 4) both 2 and 3 are correct
A lock washer which provides enough frictions to EASA
prevent loosing of nut from vibration and can be used EASA 5.17
04. till its spring action is intact is?
1
1) shake proof washer 2)tab washer
3)ball socket and seat washer 4)NOTA
The ------------- method is the most common method of EASA
the safety wirings EASA 5.21
05. 1) single wire 2) wrap and twist
1
3) double twist 4)NOTA

06. The single wire locking method may be used 1 EASA EASA 5.21
1)on small screws in a closely spaced closed
geometrical pattern
2)on parts in electrical systems
3)in places that are extremely difficult to reach
4)AOTA

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 When safety wiring ,widely spaced bolts by the double
twist method , a group of how many bolts / nuts FAA 5.22
07. should be the maximum number in series
1 9A
FAA
1)that can be locked by 6” wire 2)that can be locked
by 12” wire
3) three 4) four
When safety wiring closely spaced bolts , the number
that can be safely tied FAA 5.21
08. 1)by 24” length of wire 2) by 10” length of wire
1 9A
FAA
3) by 12” length of wire 4) by 08” length of wire

The part/portion of turn lock fastener, riveted to the

structure of aircraft is? EASA 5.24
09. 1)Grommet 2)stud
1 FAA
3)Receptacle 4)NOTA
The Dzus turn lock fastener consist of ------- parts EASA
1)Three parts 2)four parts EASA 5.24
10. 3)two parts 4)NOTA
1
11. Captive fasteners are used ? 1 5.24
1)on highly stressed panels of nose compartments EASA EASA
2)on panels which are not removed frequently
3)where quick and easy removal of access panels
are essential
4)NOTA
12. A fastening device which will not dropped out when it 1 5.24
is unscrewed/ removed from the part it is holding ? EASA EASA
1)a self locking nut
2)a structural screw
3)a lock bolt
4)a turned lock fasteners

AIRCRAFT RIVETS EASA

A rivet is a metal pin supplied as the manufactured EASA 5.27
1
with
13. 1)formed head at one end and cylindrical stem
2) shop head at one end a cylindrical shank

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 3) formed head at one end and cylindrical shank
4)NOTA

14. When two drilled sheet of metal are attached by solid 3 EASA EASA 5.28
shank rivet the tools required are hand or pneumatic
tool with a ---------- to upset the shank to form a --------
head
1)back up bar, shop head 2) bucking bar, formed head
3) back up bar, formed head 4) bucking bar, shop
head

Which types of rivets are installed by using of bucking

bar? FAA
15. 1)solid shank rivets 2) round and flat head rivets
1 9A
FAA
5.30
3) special rivets of any head style 4)brezier and
universal head rivets

Marking on the heads of rivets are used to classify

their 5.30
14. 1) strength 2)characteristics
1 EASA
EASA
3)property 4)NOTA
The rivet which has a head of large diameter that
makes it particularly adaptable for riveting thin sheet EASA 5.31
15. stock
1
EASA
1)round head 2)flat head
3)counter shank head 4)brazier head
The universal head rivet is a combination of EASA
1)round,flat and universal head EASA 5.30
16. 2) flat and universal and counter shunk head
1
3)round counter shunk and flat head
4)round , flat, brazier head
A rivet that is flat topped and beveled towards the EASA
shank , so as to suit the hole drilled and remain EASA 5.32
flushed with surface is the
1
17. 1)flat head rivet 2)counter shunk rivet
3) universal head rivet 4)NOTA
18. The counter shank head rivet used in aircraft 1 EASA EASA 5.33
application most commonly has a counter shunk angle
of

UAE STD.DOC/TRG/APP-31
 1)78 degree 2) 82 degree
3) 100 degree 4)120 degree
19. Each type of rivets is identified by a apart number for 1 EASA EASA 5.30
example AN 470 AD 3-5 What the number “470”
indicates?
1) type of head 2) standard number
3)material composition 4)NOTA

In the identification marking of AN 426 B 3-5 alphabet

B stands for? 5.32
20. 1) Alloy designation 2)material composition
2
3)aluminium alloy ,5056 composition 4)AOTA EASA

The rivet that is used more than any other for riveting
aluminum alloy structure and known as field rivet, its 5.34
21. material composition is?
1
EASA
1)aluminum alloy 2017 2)aluminum alloy 2117
3)aluminum alloy 2024 (T) 4) aluminum alloy 5056
The aluminum alloy rivets which are used for
structural application, where more strength is needed
22. are called ice-box rivets the alloy composition at these
1
EASA 5.30
rivets are. EASA
1) aluminum alloy 2117(T) and 2024(T)
2) aluminum alloy 2017(T) and 2117(T)
3) aluminum alloy 2017(T) and 2024(T)
4) aluminum alloy 5056 and 2024(T)

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