SPIRAL POINT TAPS
POT :
Suitable for through hole tapping of carbon steels, alloy steels, and nonferrous metals, whose chips are produced in continuous coil form, these taps discharge chips through the hole.
TIN-POT :
This tap is capable of tapping a wide range of materials, but is especially suited for high speed tapping of stainless steels, and quenched and temperea steels.
DH-POT :
Suitable for tapping deep through holes, especially in materials that are prone to burn seizure during machining.
|
Metric thread nominal size |
Tap limit |
Specification |
Class 2 drill hole dia |
||||
|
A |
B |
C |
E |
F |
|||
|
M3 x 0.5 |
H2,H3 |
46 |
9 |
4 |
6 |
3.2 |
2.6 |
|
M3.5 x 0.6 |
H2,H3 |
48 |
11 |
4 |
6 |
3.2 |
3 |
|
M4 x 0.7 |
H2,H3 |
52 |
12 |
5 |
7 |
4 |
3.4 |
|
M5 x 0.8 |
H2,H3 |
60 |
14.5 |
5.5 |
7 |
4.5 |
4.3 |
|
M6 x 1.0 |
H2,H3 |
62 |
17.5 |
6 |
7 |
4.5 |
5.1 |
|
M8 x 1.25 |
H2,H3 |
70 |
22 |
6.2 |
8 |
5 |
6.8 |
|
M10 x 1.5 |
H3,H4 |
75 |
24 |
7 |
8 |
5.5 |
8.6 |
|
M12 x 1.75 |
H4 |
82 |
29 |
8.5 |
9 |
6.5 |
10.4 |
|
M14 x 2 |
H4 |
88 |
30 |
10.5 |
11 |
8 |
12.2 |
|
M16 x 2 |
H4 |
95 |
32 |
12.5 |
13 |
10 |
14.2 |
|
M18 x 2.5 |
H4 |
100 |
37 |
14 |
14 |
11 |
15.7 |
|
M20 x 2.5 |
H4 |
105 |
37 |
15 |
15 |
12 |
17.7 |
|
M22 x 2.5 |
H4 |
115 |
38 |
17 |
16 |
13 |
19.7 |
|
M24 x 3 |
H4 |
120 |
45 |
19 |
18 |
15 |
21.2 |
|
Unified thread nominal size |
Tap limit |
Specification |
Class 2B drill hole dia |
||||
|
A |
B |
C |
E |
F |
|||
|
NO.5-40 UNC |
H2 |
46 |
9 |
4 |
6 |
3.2 |
2.7 |
|
NO.6-32 UNC |
H2,H3 |
48 |
11 |
4 |
6 |
3.2 |
2.9 |
|
NO.8-32 UNC |
H2,H3 |
52 |
12 |
5 |
7 |
4 |
3.5 |
|
NO.10-24 UNC |
H2,H3 |
60 |
14.5 |
5.5 |
7 |
4.5 |
3.9 |
|
NO.12-24 UNC |
H2,H3 |
60 |
14.5 |
5.5 |
7 |
4.5 |
4.6 |
|
1/4-20 UNC |
H2,H3 |
62 |
17.5 |
6 |
7 |
4.5 |
5.3 |
|
5/16-18 UNC |
H2,H3 |
70 |
22 |
6.1 |
8 |
5 |
6.7 |
|
3/8-16 UNC |
H2,H3 |
75 |
24 |
7 |
8 |
5.5 |
8.2 |
|
7/16-14 UNC |
H3,H4 |
80 |
25 |
8 |
9 |
6 |
9.5 |
|
1/2-13 UNC |
H4 |
85 |
29 |
9 |
10 |
7 |
11.0 |
|
9/16-12 UNC |
H4 |
90 |
30 |
10.5 |
11 |
8 |
12.3 |
|
5/8-11 UNC |
H4 |
95 |
32 |
12 |
12 |
9 |
13.8 |
|
3/4-10 UNC |
H4 |
105 |
37 |
14 |
14 |
11 |
16.8 |
|
7/8-9 UNC |
H4 |
115 |
38 |
17 |
16 |
13 |
19.6 |
|
1"-8 UNC |
H4 |
125 |
45 |
20 |
18 |
15 |
22.5 |
The specification of standard coarse screw thread and standard fine screw thread are the same.