M7.8 Flashcards
What angle is a countersink rivet?
100degrees
What is the number and letter for a plain rivet?
1100 A
What is the number and letter for a dimpled rivet?
2117 AD
What is the number and letter for a raised cross rivet?
5056 B
What is the number and letter for a raised dot rivet?
2017 D
What is the number and letter for a 2 raised dashed rivet?
2024 DD
What is the number and letter for a raised ring rivet?
7050 E
When it comes to rivet coding, what do the first numbers mean?
1xxx= 99% aluminium 2xxx= copper 3xxx= manganese 4xxx= silicon 5xxx= magnesium 6xxx= magnesium and silicon 7xxx= zinc 8xxx= other elements 9xxx= unused series
What is pitch of rivets?
The centre of one rivet to the next
What is land of rivets?
The centre of a rivet to the edge of the metal
What is spacing of rivets?
The distance between rows
What is sphere of influence of rivets?
The area that a rivet achieves water tightness
What is allowance of rivets?
The amount of protrusion allowed
When is dimpling used?
When the material is too thin to countersink
What types of dimpling are there?
- coin
- radius
- hot