Somta - page 69

59
UNF
Nominal
Diameter
Tapping
Drill Size (mm) TPI
No.3
No.4
No.5
No.6
No.8
No.10
No.12
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1"
1-1/8
1-1/4
1-3/8
1-1/2
56
48
44
40
36
32
28
32
28
24
24
20
20
18
18
16
14
12
12
12
12
12
2.1
2.35
2.65
2.9
3.5
4.1
4.6
4
5.5
6.9
8.5
9.8
11.5
12.8
14.5
17.5
20.5
23.5
26.5
29.5
32.5
36
BA
0
1
2
3
4
5
6
7
8
9
10
25.4
28.2
31.3
34.8
38.3
43.1
47.9
52.9
59.1
65.1
72.6
5.1
4.5
3.9
3.4
3
2.65
2.3
2.05
1.8
1.55
1.4