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 4-7. K-chart for determining setback for bends other than 90 degrees.
Deg.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
K
0.0087
0.0174
0.0261
0.0349
0.0436
0.0524
0.0611
0.0699
0.0787
0.0874
0.0963
0.1051
0.1139
0.1228
0.1316
0.1405
0.1494
0.1583
0.1673
0.1763
0.1853
0.1943
0.2034
0.2125
0.2216
0.2308
0.2400
0.2493
0.2586
0.2679
0.2773
0.2867
0.2962
0.3057
0.3153
0.3249
Deg.
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
K
0.3346
0.3443
0.3541
0.3639
0.3738
0.3838
0.3939
0.4040
0.4142
0.4244
0.4348
0.4452
0.4557
0.4663
0.4769
0.4877
0.4985
0.5095
0.5205
0.5317
0.5429
0.5543
0.5657
0.5773
0.5890
0.6008
0.6128
0.6248
0.6370
0.6494
0.6618
0.6745
0.6872
0.7002
0.7132
0.7265
Deg.
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
K
0.7399
0.7535
0.7673
0.7812
0.7954
0.8097
0.8243
0.8391
0.8540
0.8692
0.8847
0.9004
0.9163
0.9324
0.9489
0.9656
0.9827
1.000
1.017
1.035
1.053
1.072
1.091
1.110
1-130
1.150
1.170
1.191
1.213
1.234
1.257
1.279
1.303
1.327
1.351
1.376
Deg.
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
K
1.401
1,428
1.455
1.482
1.510
1.539
1.569
1.600
1.631
1.664
1.697
1.732
1.767
1.804
1.841
1.880
1.921
1.962
2.005
2.050
2.096
2.144
2.194
2.246
2.299
2.355
2.414
2.475
2.538
2.605
2.674
2.747
2.823
2.904
2.988
3.077
AC 43.13-1B
Deg:
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
K
3.171
3.270
3.375
3.487
3.605
3.732
3.866
4.010
4.165
4.331
4.510
4.704
4.915
5.144
5.399
5.671
5.975
6.313
6.691
7.115
7.595
8.144
8.776
9.514
10.38
11.43
12.70
14.30
16.35
19.08
22.90
26.63
38.18
57.29
114.59
Inf.
(2) The material used for the majority
of solid shank rivets is aluminum alloy. The
strength and temper conditions of aluminum
alloy rivets are identified by digits and letters
similar to those used to identify sheet stock.
The 1100, 2017-T, 2024-T, 2117-T, and
5056 rivets are the six grades usually available.
AN-type aircraft solid rivets can be identified
by code markings on the rivet heads. A rivet
made of 1100 material is designated as an
“A” rivet, and has no head marking. The
2017-T alloy rivet is designated as a “D” rivet
and has a raised teat on the head. Two dashes
on a rivet head indicate a 2024-T alloy desig
nated as a “DD” rivet. The 2117-T rivet is
designated as an “AD” rivet, and has a dimple
on the head. A “B” designation is given to a
rivet of 5056 material and is marked with a
raised cross on the rivet head. Each type of
rivet is identified by a part number to allow the
user to select the correct rivet. The numbers
are in series and each series represents a par
ticular type of head. (See figure 4-4 and ta
ble 4-8.)
(3) An example of identification mark
ing of rivet follows.
MS 20470AD3-5
MS
20470
AD
3
5
Complete part number
Military standard number
Universal head rivet
2117-T aluminum alloy
3/32nds in diameter
5/16ths in length
Par 4-57
Page 4-15