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Module 7 > 7.3: Tools > Flashcards

7.3: Tools Flashcards

1
Q

What and why are screwdriver shanks sheathed?

A

With carbon steel to protect users on electrical systems

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2
Q

What is done to the tip/blade of a screwdriver for protection?

A

Hardened

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3
Q

What are flat head screwdrivers typically used for on aircraft?

A

Quick release fasteners

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4
Q

How are phillips screwdrivers compared to reed and prince/frearson?

A

They have a blunt end a slightly larger centre in the cross compared to reed/frearson

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5
Q

What is the point angle of phillips screwdrivers?

A

30 degrees

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6
Q

What are the numbers of smallest screwdrivers and what are they for?

A

00, 000, 0000 for watchmakers

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7
Q

What is the point angle of reed and prince?

A

45 degrees

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8
Q

What are the sizes for freason screwdrivers?

A

Size 1 is for #5 and smaller
Size 2 is for #6 and larger

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9
Q

What are pozidriv screwdrivers comapred to phillips?

A

They are an improved version with more contact area

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10
Q

What advantage does torx screwdrivers have>

A

They have an advantage when removing screw clogged with debris, paint

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11
Q

What are internal hex screws?

A

Allen key screws

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12
Q

What is torq set?

A

Like phillips but the cross is offset ensuring greater torque which increases screw security where the torque loading is critical

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13
Q

What is mortorq?

A

Four wings that are curved and fit into the matching screw head allowing full contact with an ability for a higher strength shallower recess to be made

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14
Q

What is hi-torque?

A

Has a straight almost slotted arrangement, with curved walls allowing much higher torque

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15
Q

Where is the carpenter or claw hammer used on the aircraft?

A

It is not used on the aircraft

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16
Q

How are hammers classified by?

A

Pein
Weight
Shape
Face

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17
Q

What are the common types of hammers used in aviation?

A

Ball pein
DIN general purpose
Soft face mallet

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18
Q

What are ball pein hammers made from?

A

High-grade drop forged steel which is fully heat treated

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19
Q

What are done to the handle of pliers and why?

A

Sheathed to protect operators from electric shock

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20
Q

How are pliers classified?

A

By their function and the type of nose they have

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21
Q

What are single fixed joint pliers like?

A

Half cut out and placed inside each other with a pivot point installed

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22
Q

What are toggle compound pliers like?

A

Has a toggle point with the single fixed joints to allow the user to apply more leverage

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23
Q

What are lap joints?

A

Both halves of the pliers are made and jointed on top of each other for leverage when cutting

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24
Q

What are multi-grip pliers?

A

Curved grooves that employ a slip joint which makes them adaptable to most situations

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25
Q

How are vice grip pliers adjusted?

A

By a knurled screw located in the end of the main handle

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26
Q

What is the threaded screw of the C or G clamp and why?

A

An ACME thread for strong clamping force

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27
Q

What are classifications of spanners?

A

Open end spanner
Ring spanner
Combination spanner
Ratchet handles and breaker bars
Sockets
C spanner
Strap wrench

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28
Q

Open end and crows foot spanners can be either what?

A

Hex open end
Bi hex open end

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29
Q

What is the common and maximum angle open end spanners are set at?

A

Mostly 15 degrees but can be up to 90

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30
Q

What does crow foot spanners have an opening for?

A

Insertion of a ratchet handle

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31
Q

What type of spanners are good for securing bleed nipples or pipework?

A

Bi-hex open end and crow foot spanners

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32
Q

When should adjustable spanners be used on an aircraft?

A

When a commercially available item is fitted using non-aircraft standard fasteners

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33
Q

What type of spanner is good for close quaters?

A

Ratchet ring spanners

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34
Q

What are the common sizes for ratchet handle drive?

A

1/4 in
3/8 in
1/2 in
3/4 in

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35
Q

Do breaker bars have a rachet mechanism?

A

No

36
Q

What is the extension bar in a socket set?

A

Fitted between the ratchet handle and socket and provides a long reach for the socket into hard to access areas

37
Q

How are socket spanner handles and socket heads held together?

A

Through a light spring loaded poppet

38
Q

What are C spanners broken down into?

A

Fixed C-spanner
Adjustable C-spanner
C-pin spanner
Pin face spanner

39
Q

What’s an example a C-spanner use on aircraft?

A

Oleo strut

40
Q

How is an adjustable C-spanner constructed?

A

The middle of C split and connected by a pin forming a hinge

41
Q

How is a strap wench constructed?

A

Has a woven nylon strap impregnated with a powdered resin to help grip

42
Q

What example of use does a strap wrench have on aircraft?

A

Can be used on a galley water filter that is supposed to be hand tight but has become tight through time

43
Q

What are type 1 torque wrenches?

A

Wrenches that indicate torque on a mechanical scale, dial or electronically so it is up to the operator to stop at desired torque

44
Q

What are type 2 torque wrenches?

A

Fixed to an adjustable or pre set torque value so an audible, visible and/or feel is used for desired torque

45
Q

List of type 1 torque wrenches?

A

Flex bar torque wrench (Class A)
Wrench with a dial indicator (Class B)
Wrench with electronic measurements (Class C)
Screwdriver with indicator (Class D)
Screwdriver with a digital scale (Class E)

46
Q

How often are flex bar torque wrenches used (Class A)?

A

Rarely due to susceptibility to damage

47
Q

How often are wrenches with a dial indicator used (Class B)?

A

Used mainly in workshops due to bulky nature and the dial being challenging to read

48
Q

How often are wrenches with electronic measurements used (Class C)?

A

Used more often but most have an audible signal for desired torque, making them type 2

49
Q

How often are screwdrivers with indicator used (Class D)?

A

Not used

50
Q

How often are screwdrivers with a digital scale used (Class E)?

A

Not used

51
Q

List of type 2 wrenches?

A

Adjustable wrench with indicator (Class A)
Fixed torque wrenches (Class B)
Adjustable wrench without indicator (Class C)
Adjustable screwdriver with indicators (Class D)
Fixed screwdrivers (Class E)
Adjustable screwdrivers without indicators (Class F)
Adjustable wrench with a flexing bar (Class G)

52
Q

How common is the adjustable wrench with indicator used (Class A)?

A

Most commonly used torque wrench

53
Q

What is the mechanism of an adjustable wrench with indicator?

A

It has a vernier scale on the barrel and has a clicking sound with a ratchet. The clicking sound is done through a tilting block arrangement inside the torque wrench with a spring adjusted to reach desired tension on the pivot block

54
Q

How often are fixed torque wrenches used (Class B)?

A

Used in the workshop environment

55
Q

How are fixed torque wrenches set to desired torque?

A

Through co axial connectors that breaks on achieving set torque

56
Q

How is torque set on an adjustable wrench without an indicator (Class C)?

A

It is set internally and is fixed for the duration that it is in service

57
Q

How does the adjustable screwdrivers indicate torque when done (Class D)?

A

Involves the screwdriver slipping when desired torque is reached, a clicking sound and electronic settings

58
Q

What are fixed (Class E) and adjustable screwdrivers with indicators (Class F) used for?

A

Used for lower torque values and is adjusted internally

59
Q

How popular are adjustable wrench with a flexing bar?

A

Reasonably popular and are used for much higher torques, with audible and visual indicators

60
Q

What is torque?

A

The moment force, with the force being measured by a torque wrench is called a reaction force

61
Q

What are the units for torque?

A

Nm or lbs-ft
lbs-inch for smaller forces

62
Q

How to convert Nm to lbs-ft?

A

Divide Nm by 1.356

63
Q

How to convert lbs-ft to lbs-inch?

A

Multiply lbs-ft by 12

64
Q

Why should you not soak a torque wrench in solvent?

A

You can ingress the tool

65
Q

What are rules made of and what sizes?

A

Tempered carbon steel or satin finished stainless steel and come in either 6 or 12 inches

66
Q

What angle does the combination of a square head and rule use to scribe lines?

A

45 degree angle

67
Q

What is the scriber in the combination set held by?

A

Held frictionally in the head by a small brass bushing

68
Q

What are common sizes with engineers squares?

A

3 to 12 inches

69
Q

What are engineers squares used to?

A

Mark 90 degree angle
Check internal and external angles

70
Q

How are scribers constructed?

A

Made of tool steel, 10 to 100 cm long and have one end 90 degrees bent for marking holes

71
Q

What materials should dividers or compasses not be used on?

A

Metal as it can cause permanent damage

72
Q

What are callipers used for?

A

Measuring distances and diameters or comparing distances and sizes

73
Q

What are two types of callipers?

A

Inside
Outside

74
Q

What are the two types of punches generally used?

A

Solid
Hollow

75
Q

What are punches usually made out of?

A

Hardened steel, but a type of punch called a drift can be made out of copper or bronze to minimise damage to objects that are drifted out

76
Q

What is a prick punch?

A

Has a sharp tip ground to an angle of 30-60 degrees and is used to mark a piece of metal and show where the holes need to be drilled initially

77
Q

What is a centre punch?

A

Ground angle of 60 degrees for light work and 90 degrees for general work, after a prick punch

78
Q

What is an automatic centre punch?

A

Has an adjustable spring loaded trip mechanism and has an angle of 60 degrees for light work and 90 degrees for general work

79
Q

What are beryllium copper and brass punches used for?

A

Where a risk of sparking is present if a hardened steel punch was used

80
Q

What is a role pin punch used for?

A

The removal of roll pins and not used as a pin punch

81
Q

What are straight snips used for?

A

Used for cutting straight lines when the distance is not great enough for a guillotine and for cutting the outside of a curve

82
Q

What types of snips are used for the inside of curves or radii?

A

Curve
Hawksbill

83
Q

Can snips be used for heavy sheet metal?

A

No

84
Q

What are the colours for handles in snips?

A

Yellow aviation snips cut straight
Green aviation snips curve right
Red aviation snips curve left

85
Q

What is the hacksaw range in inches?

A

From 6 to 16 inches with 12 being the most common

86
Q
A

Module 7 (16 decks)

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