Download As Cheat Sheet
11 Different Types Of Taps To Select | Complete Guide
Hand Tapping | How To Guide
BSP PI (Rp) BSPF (G) British Standard Pipe
Parallel Tap & Drill Sizes |
|---|
Nominal
dia. | Threads
per
inch | Tap
drill sizes
mm. | Nominal
dia. | Threads
per
inch | Tap
drill sizes
mm. |
1/8*
1/4*
3/8*
1/2*
3/4*
1*
1.1/4*
1.1/2*
2*
| 28
19
19
14
14
11
11
11
11 | 8.60
11.50
15.00
18.75
24.25
30.40
39.00
45.00
56.75 | 1/8*
1/4*
3/8*
1/2*
5/8*
3/4*
7/8*
1*
1.1/4*
1.1/2*
1.3/4*
2* | 28
19
19
14
14
14
14
11
11
11
11
11 | 8.80
11.80
15.25
19.00
21.00
24.50
28.25
30.75
39.50
45.00
51.00
57.00
|
