TM 9-243
Table 2. A. S. M. E,:. STANDARD SCREWS AND AMERICAN WIRE: GAUGE
Number
SCREWS
Outside
diameter
(INCHES)
Threads
per
inch
gauge
diameter
gauge
diameter
0
0.060
80
6/0
0.5800
16
0.0508
1
0.073
72, 64
5/0
0.5164
17
0.0452
2
0.086
64, 56
4/0
0.4600
18
0.0403
3
0.099
56, 48
3/0
0.4096
19
0.0359
4
0.112
48, 40, 36
2/0
0.3648
20
0.0319
5
0.125
44, 40, 36
1/0
0.3249
21
0 0284
6
0.138
40, 36, 32
1
0.2893
22
0.0253
7
0.151
36, 32
2
0.2576
23
0.0225
8
0.164
36, 32, 30
3
0.2294
24
0.0201
9
0.177
32, 30, 24
4
0.2043
25
0.0179
10
0.190
32, 24
5
0.1819
26
0.0159
12
0.216
28, 24
6
0.1620
27
0.0142
1/4
0.250
28, 20
7
0.1443
28
0.0126
5/16
0.313
24, 18
8
0.1285
29
0.0112
3/8
0.375
24, 16
9
0.1144
30
0.0100
7/16
0.438
20, 14
10
0.1019
31
0.0089
1/2
0.500
20, 12
11
0.0907
32
0.0079
12
0.0808
33
0.0071
13
0.0719
34
0.0063
14
0.0640
35
0.0056
15
0.0570
36
0.0050
B-2 Change 3
