The standard of Tap sets
The standard of tap set for air tapping machine
TAP |
DIN 371 Round*square |
DIN 376Round*square |
ISO Round*square |
JIS Round*square |
M2 |
2.8×2.1 |
2.5×2.1 |
2.8×2.25 |
3×2.5 |
M3 (1/8) |
3.5×2.7 |
|
3.15×2.5 |
4×3.2 |
M4 (5/32) |
4.5×3.4 |
|
4×3.15 |
5×4 |
M5 ( 3/16) |
6×4.9 |
|
5×4 |
5.5×4.5 |
M6 (1/4) |
6×4.9 |
|
6.3×5 |
6×4.5 |
M8 (5/16) |
8×6.2 |
6×4.9 |
6.3X5 |
6.2×5 |
M10 (3/8) |
10×8 |
7×5.5 |
8X6.3 |
7×5.5 |
M12 |
|
9×7 |
9×7.1 |
8.5×6.5 |
1/2″ |
|
9×7 |
9×7.1 |
9×7 |
M14 ( 9/16) |
|
11×9 |
11.2×9 |
10.5×8 |
M16 |
|
12×9 |
12.5×10 |
12.5×10 |
5/8″ |
|
12×9 |
12.5×10 |
12×9 |
M18 (3/4) |
|
14×11 |
14×11.2 |
14×11 |
M20 |
|
16×12 |
14×11.2 |
15×12 |
M22 ( 7/8) |
|
18×14.5 |
16×12.5 |
17×13 |
M24 |
|
18×14.5 |
18×14 |
19×15 |
1″ |
|
|
|
18×14.5 |
M11 (1/8 PT) |
|
|
8×6.3 |
8×6 |
1/4 PT |
|
|
11.2×9 |
11×9 |
So when you choose the air tapping machine, make sure which kind of tap set you used in your factory, then you can choose the right tap holder for you.
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