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M7 E > M7.8 > Flashcards

M7.8 Flashcards

1
Q

What angle is a countersink rivet?

A

100degrees

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2
Q

What is the number and letter for a plain rivet?

A

1100 A

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3
Q

What is the number and letter for a dimpled rivet?

A

2117 AD

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4
Q

What is the number and letter for a raised cross rivet?

A

5056 B

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5
Q

What is the number and letter for a raised dot rivet?

A

2017 D

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6
Q

What is the number and letter for a 2 raised dashed rivet?

A

2024 DD

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7
Q

What is the number and letter for a raised ring rivet?

A

7050 E

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8
Q

When it comes to rivet coding, what do the first numbers mean?

A 
1xxx= 99% aluminium
2xxx= copper
3xxx= manganese 
4xxx= silicon
5xxx= magnesium
6xxx= magnesium and silicon 
7xxx= zinc
8xxx= other elements
9xxx= unused series
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9
Q

What is pitch of rivets?

A

The centre of one rivet to the next

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10
Q

What is land of rivets?

A

The centre of a rivet to the edge of the metal

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11
Q

What is spacing of rivets?

A

The distance between rows

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12
Q

What is sphere of influence of rivets?

A

The area that a rivet achieves water tightness

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13
Q

What is allowance of rivets?

A

The amount of protrusion allowed

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14
Q

When is dimpling used?

A

When the material is too thin to countersink

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15
Q

What types of dimpling are there?

A
  • coin
  • radius
  • hot
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16
Q

What are the types of riveting?

A
  • pneumatic rivet gun
  • hand hammering
  • continuous squeeze-riveting
17
Q

What is the back-up dolly also known as?

A

Bucking bar

18
Q

What is hand hammering also known as?

A

Percussion riveting

19
Q

What rivets must be refrigerated after being heat-treated?

A

2017 and 2024

20
Q

What are grip gauges used for?

A

To figure out the size of rivet needed for a hole

21
Q

If rivets are storied at -18, how long can they be stored?

A

7 days

22
Q

If rivets are stored at -20, how long can they be stored?

A

20 days

M7 E (14 decks)

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