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AMT V1-22 > AMT Hardware > Flashcards

AMT Hardware Flashcards

1
Q
A

AN804
Bulkhead Tee,
Bulkhead on run

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2
Q
A

AN806

Pressure Plug

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3
Q
A

AN814

Bleeder Plug

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4
Q
A

AN815

Union

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5
Q
A

AN816
Pipe to 37⁰ Flare,
Straight

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6
Q
A

AN818

Tube Nut

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7
Q
A

AN821

90⁰ Elbow

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8
Q
A

AN standard steel bolt

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9
Q
A

AN standard steel bolt

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10
Q
A

AN standard steel bolt

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11
Q
A

AN standard steel bolt (corrosion resistant)

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12
Q
A

AN standard steel bolt

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13
Q
A

AN standard steel bolt

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14
Q
A

AN standard steel bolt

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15
Q
A

AN standard steel bolt

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16
Q
A

Special bolt

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17
Q
A

Special bolt

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18
Q
A

Drilled head bolt

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19
Q
A

Special bolt

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20
Q
A

NSA Close tolerance bolt

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21
Q
A

Aluminum alloy (2024) bolt

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22
Q
A

Magnetically Inspected

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23
Q
A

Orange-dyed magnetically inspected

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24
Q
A

Clevis bolt

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25
Q
A

Reworked bolt

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26
Q
A

Low strength material bolt

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27
Q

What is the purpose of standards?

A
  • Hardware meets or exceeds specs
  • Stays consistent to same reference point
  • Creates trust, integrity on regulated products
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28
Q

AN

A

Airforce Navy

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29
Q

MS

A

Military Standard

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30
Q

NAS

A

National Aerospace Standards

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31
Q

SAE

A

Society of Automotive Engineers

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32
Q

AMS

A

Aeronautical Material Specification

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33
Q

MIL

A

Military Specification

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34
Q

AN bolt length sized in ____increments

A

1/8”

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35
Q

AN bolt diameter sized in ____ increments

A

1/16”

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36
Q

Combined washer height/thickness can be no more than ____

A

1/8”

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37
Q

IPC

A

Illustrated Parts Manual

-Lists the specific part numbers of hardware required for relevant installation

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38
Q

STC

A

Supplemental Type Certificate

-A civil aviation authority-approved major modification or repair to an existing type certified aircraft, engine or propeller.

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39
Q

What two standards combined to make AN standards?

A

AS-American standard

UN-Unified National

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40
Q
A

Sharp V

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41
Q
A

Whitworth

-55⁰ angle

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42
Q
A

Buttress

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43
Q
A

Square

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44
Q
A

ACME

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45
Q
A

Worm

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46
Q

The body drill size is equivalent to ____ of a thread

A

Major diamater

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47
Q

The inside diameter of nut is equivalent to the ____of a thread

A

Minor diameter

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48
Q

Class 1 is a _____thread fit

A

Loose

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49
Q

Class 2 is a ____ thread fit

A

Free

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50
Q

Class 3 is a ___thread fit

A

Medium

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51
Q

Class 4 is a ___thread fit

A

Close

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52
Q

Class 5 is a ___thread fit

A

Tight

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53
Q
A

Major diameter

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54
Q
A

Pitch diameter

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55
Q
A

Minor diameter

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56
Q
A

Angle

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57
Q
A

Root

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58
Q
A

Crest

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59
Q
A

Pitch

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60
Q

If the PN is M10 for a metric thread that means:

A

The major diameter is 10 mm (milimeters)

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61
Q

Metric threads have a _____angle

A

60⁰

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62
Q

The pitch of a P/N M10x1.0 is

A

1.0 mm

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63
Q

AN bolt are what thread standard?

A

National Fine

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64
Q

National Fine thread standards are typically for ____requirements

A

High torque

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65
Q

National Coarse threads are typically used for _____ requirements and lower cycling loads.

A

Lower torque

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66
Q

AC strength can reach _______as compared to hardware at only 55,000 psi

A

125,000psi

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67
Q

A/C hardware is _____plated as compared to regular hardware which is not plated

A

Cadmium

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68
Q

A/C hardware is _____ whereas hardware is not.

A

Certified/approved

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69
Q

True or false, AC hardware cannot be traced

A

False. By having special standards and regulations, aircraft hardware is traceable and therefore holds its integrity as a reliable product.

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70
Q

Bolt diameter at 1/16” increments is slightly ____ than nominal

A

Less

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71
Q

Bolt length at 1/8” increments is slightly ____ than nominal

A

More

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72
Q

In bolt AN4-4A, A stands for what?

A

A is absent hole from shank of bolt.

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73
Q

In AN4H-4A, H stands for what

A

H is hole in head of bolt, A is absent hole from shank

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74
Q

What does DD indicate in bolt naming?

A

Aluminum

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75
Q

In AN17, what does 17 mean?

A

Close tolerance bolt

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76
Q

AN73-4, 7 indicates what

A

Engine bolt

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77
Q

AN24, 2 indicates

A

Clevis bolt

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78
Q

P/N MS-20004 to MS-20024 is what

A

Internal Wrenching bolt

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79
Q

What special requirement for an internal wrenching bolt?

A

A special countersunk washer is required (MS20002C)

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80
Q

What is unique about an internal wrenching bolt? (MS20002)

A

It has a radius between shank and head to prevent stress risers from a sharp edge. A corresponding washer to that radius is required as well.

Also has 160,000 psi tensile strength, used for high load areas such as wing attachments.

81
Q
A

Internal wrenching bolt

-Look for radius at head

82
Q

Identify

A

AN Aircraft Navy

  • 17 = close tolerance
  • 3 = diameter in 1/16”
  • 10 = length in 1/8 (1”)
83
Q

Identify

A

AN Aircrat Navy

  • 7 is engine bolt
  • 3 is diameter in 1/16
  • 4 is length in 1/8
  • fine thread
  • If an A after,(AN73A-4) = COARSE
84
Q
A

12 point washer head bolt

85
Q
A

Flush head bolt

86
Q

What is the torque measurement for metric bolts

A

Meters or deca-newtons

87
Q

Wrench size for AN5 bolt diameter

A

1/2

5/16 add 3/16 = 8/16 to 1/2

88
Q

Wrench size for 3/8 AN6

A

9/16

6/16 add 3/16 = 9/16

89
Q

With bolt installation:

A
  • Washer like surface material
  • Grip length same as joined material thickness
  • Install as per MM, SID, STC, AD
90
Q

If grip length is too long for materials joining you should

A

Use washer or smaller bolt.

91
Q

All bolt heads and LH threads installed:

A

Up, forward and outboard

92
Q

Drill hole for bolts, loose fit is

A

Larger than bolt shank by .002 to .005

93
Q

Drill goles for bolts, push fit is

A

Reamed to fit, allows bolt to be installed with steady hand pressure

94
Q

Drill holes for bolts, tight drive fit is

A

Installed with a few blows of a hammer

95
Q

Drill holes for bolts, interference fit is

A

Bolt diameter is larger than hole, hole is heated, bolt is chilled prior to installation.

96
Q
A

Clevis bolt

97
Q
A

Eye bolt

98
Q
A

Jo bolt

99
Q
A

Lockbolts

100
Q
A

Hi lok

101
Q

What class fit is a nut

A

Class 3

102
Q

What two types of nuts are there?

A

Self locking and non self locking

103
Q
A

Non self locking nuts

104
Q

True or false, self locking nuts must be used on parts subject to rotation

A

False. They must NOT.

105
Q

Can you install a self locking nut above a turbine engine inlet?

A

No, it could fall off into the turbine engine inlet and become a big problem.

106
Q

True or false. Self-locking nuts should be installed on components that are routinely disassembled.

A

False.

107
Q

Nylon locking nuts must not be used

A

In engine compartments or electrical terminals, they will melt from high heat.

108
Q

Each removable fastener must incorporate two retaining devices IF the loss of such fastener would preclude what?

A

Continued safe flight and landing

109
Q

Fasteners and locking devices must not be adversely effected by what?

A

Environmental conditions associated with particular installation

110
Q

No ______ nut may he used on any bolt subject ti rotation in operation unless non-friction locking device is used in addition to the _____device

A

Self-locking

111
Q

If the inside diameter of a nut is .216, according to the table, it is a what?

A

A 1/4” -28 nut

112
Q
A

AN310 CASTLE NUT

113
Q
A

AN320 SHEAR CASTLE NUT

114
Q
A

AN315 PLAIN NUT

115
Q
A

AN316 CHECK NUT

116
Q
A

AN340 MACHINE SCREW NUTS

117
Q
A

AN345 MACHINE SCREW NUT

FINE

118
Q
A

AN355 SLOTTED ENGINE NUT

119
Q
A

AN360 PLAIN ENGINE NUT

120
Q
A

Palnut

121
Q

In safety of nylon self locking nuts, how many threads must show

A

1 to 3

122
Q

What temperature do nylon self locking nuts work below

A

250⁰F

123
Q

Do not use a nylon self locking nut if

A

It has no drag

124
Q

If more then 3 threads showing, there is danger of nut thread ____

A

Bottoming out on bolt shank

125
Q
A

AN365 NYLON LOCK NUT

126
Q

AN365-428A, A means

A

Non-metallic insert

127
Q

AN465-428C, C means

A

All-metal locknut

128
Q
A

AN364 LOW PROFILE NYLON LOCK NUT

129
Q

A self locking castle nut with nylon insert provides additional or double what

A

Safety

130
Q
A

AN363 AND MS21042 HIGH TEMP LOCK NUT

131
Q

What is swaged?

A

To reduce or taper by forging or squeezing.

132
Q
A

Plain washer

133
Q
A

Large area washer

134
Q
A

Split lock washer

135
Q
A

Shake proof lock washer

136
Q
A

High strength washer

137
Q
A

High strength countersunk washer

138
Q

Washer AN960

A

Cadmium plated steel washer

139
Q

Washer AN960C

A

C means corrosion resistant steel

140
Q

Washer AN960B

A

B is brass

141
Q

Washer AN960D

A

D is aluminum alloy

142
Q

Washer AN960PD

A

PD anodized aluminum alloy

143
Q

Washer AN960-416L

A

L=Light 1/2 thickness

-used for lining up cotterpin hole to castellated nut

144
Q

Two types of machine screws

A

Structural and non structural

145
Q
A

Pan head
100⁰ countersink
Washer head
Filister head

146
Q
A
147
Q

Two types of screw points

A

Sharp points (gimlet) and blunt points (various)

148
Q
A

Two-lug anchor nut

149
Q
A

One lug anchor nut

150
Q
A

Corner anchor nut

151
Q
A

Right angle anchor nut

152
Q
A

High temperature two-lug anchor nut

153
Q
A

Two lug floating anchor nut

154
Q
A

Instrument nut

155
Q
A

Anchor type tinnerman nut

156
Q
A

U type tinnerman

157
Q

Cotterpins are measured in length how?

A

By the shortest leg

158
Q

Tapered pins are used in shear loaded joints where absence of ____is essential

A

Play/movement

159
Q

When choosing a bolt:

A

Grip length = joined material thickness
Washer under nut
Safety, 1 to 3 threads showing after engagement

160
Q

Choose proper hardware

.250 hole
Total material thickness is 1.315”
Use general purpose AN bolt
Use castellated nut, washer and cotterpin

A 
AN4-16 bolt
AN960-416 washer
AN310-4 nut
AN380-2-2 cotterpin
MS24665-132 Cotterpin
161
Q

Choose proper hardware

.375 hole
Total material thickness is 2.500”
Use regular AN bolt
Use nylon lockout, with plain washer

A

AN6-31A Bolt
AN960-616 washer
AN365-624A Nut

162
Q

Fittings

Uses familiar UNF thread, non-tapered thresd design, seals angled mating surfaces

A

Tube thread

163
Q

Fittings

Uses NPT thread, tapered thread design, seals on tapered threads

A

Pipe thread

164
Q

Fittings

37⁰ chamfer, coarse thread, blue or black in color. Accepted in aviation maintenance.

A

AN Fittings

165
Q

30⁰, gray or yellow in colour, finer thread, not accepted

A

AC Air Corp

166
Q

These fittings go through structure and bulkheads, boss o-rings installed into castings

A

Bulkhead tube fittings

167
Q

When installing o rings, what indicates a proper fit

A

O ring is pinched into fitting to prevent leaks, fitting is chamfered so o ring is not cut

168
Q

Tubing is sized by _____ diameter

A

Outside

169
Q

Flexible hose is sized by

A

Inside diameter

170
Q
A

Low pressure tubing

171
Q
A

Medium pressure tubing

172
Q
A

High pressure tubing

173
Q

What type of aluminum is used in an A-type aircraft rivet

A

1100

174
Q

What mark is on the head of an A-type rivet

A

No mark, plain

175
Q

What type of aluminum alloy is used in am AD type rivet

A

2117-T

176
Q

What mark is on the head of an AD type rivet

A

Recessed dot

177
Q

Why are A type rivets not approved for structural use?

A

Too soft, only used for non structural softer materials

178
Q

What are the two alloys for ice box rivets

A

2017-T and 2024-T

179
Q

Why are ice box rivets to be kept in sub-freezing temperatures after being heat treated

A

They age harden at room temperature in minutes

180
Q

What type of aluminum alloy is in B rivet

A

5056-T

181
Q

What are B rivets used for

A

Rivet magnesium alloy structures, corrosion resistant traits

182
Q

What type of metal is an F type rivet

A

Corrosion resistant steel

183
Q

What are F type rivets used for

A

Riveting corrosion resistant steel firewalls

184
Q

What is an M type rivet made of

A

Monel

185
Q

What are thebtwo most common rivets

A

Common solid shank and blind rivets

186
Q

AN for round head rivet

A

AN430

187
Q

AN number for flat head rivet

A

AN441

188
Q

AN number for universal head

A

AN470

189
Q

MS number for universal head rivet

A

MS20470

190
Q

AN number for 100 degree countersunk rivet

A

AN426

191
Q

MS number for 100 degree countersunk rivet

A

MS20426

192
Q

True or false

Pull type lockbolts are equal strength to AN bolts and are difficult to install. They are also lighter

A

False, they are easy and quick to install.

193
Q

Where can you find the correct hardware part numbers to assemble on certified aircraft?

A

The Maintenance Manual (MM) and Illustrated Parts Catalog (IPC)

194
Q

What is the most common head marking on am AN standard bolt?

A

A raised dash or asterisk

195
Q

What class fit are AN bolts and Nuys manufactured with?

A

Class 3, medium fit

196
Q

Aircraft nuts can be divided into 2 types, what are they?

A

Self-locking and non-self-locking

197
Q

Where should self-locking nuts NOT be used?

A
  • Parts subject to rotation
  • Where they can fall into an engine inlet
  • On access panels routinely disassembled
198
Q

What type of bolt installation for a castle nut?

A

With a drilled shank bolt in a shear load only

199
Q

Hardware required for a .250 diameter hole joining two pieces of aluminum 1.315”. What is the bolt, castellated nut, washer and cotterpin?

A

AN4-16 bolt
AN960-416 washer
AN310-4 nut
AN380-2-2 cotterpin

AMT V1-22 (8 decks)

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