FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 4. Metal Structure, Welding, and Brazing | 4. Metal Repair Procedures | 4-57. Riveting
9/8/98
TABLE 4-8. Aircraft rivet identification.
Material
Head
Marking
1100
Plain
2117T
Dimpled
2017T
Raised
Dot
2017T-HD
Raised
Dot
2024T
Raised
Double
Dash
AC 43.13-1B
5056T
Raised
Cross
7075-T73
Three
Raised
Dashes
AN
Material
A
AD
D
D
DD
B
Code
AN425
78�
X
X
X
X
X
X
Counter-
Sunk Head
AN426
100�
X
Counter-
X
X
X
X
X
X
Sunk Head
MS20426
AN427
100�
Counter-
Sunk Head
MS20427
AN430
Round
X
Head
X
X
X
X
X
X
MS20470
AN435
Round
Head
MS20613
MS20615
AN 441
Flat Head
AN 442
Flat Head
X
MS20470
X
X
X
X
X
X
AN 455
Brazier
X
Head
X
X
X
X
X
X
MS20470
AN 456
Brazier
X
Head
X
X
X
X
X
X
MS20470
AN 470
Universal
X
Head
X
X
X
X
X
X
MS20470
Heat Treat
Before
No
Using
No
Yes
No
Yes
No
No
Shear
Strength
psi
10000
30000
34000
38000
41000
27000
Bearing
Strength
psi
25000
100000
113000
126000
136000
90000
Par 4-57
Page 4-17