| |
BSW
(British Standard Whitworth)
|
|
| |
SIZE
|
THREADS
per INCH
|
TAP
DRILL SIZE (mm)
|
1/8"
|
40
|
2.55
|
3/16"
|
24
|
3.70
|
1/4"
|
20
|
5.10
|
5/16"
|
18
|
6.50
|
3/8"
|
16
|
7.90
|
7/16"
|
14
|
9.30
|
1/2"
|
12
|
10.50
|
9/16"
|
12
|
12.10
|
5/8"
|
11
|
13.50
|
11/16"
|
11
|
15.00
|
3/4"
|
10
|
16.25
|
7/8"
|
9
|
19.25
|
1"
|
8
|
22.00
|
1.1/8"
|
7
|
24.75
|
1.1/4"
|
7
|
28.00
|
1.1/2"
|
6
|
33.50
|
1.3/4"
|
5
|
39.00
|
2"
|
4.5
|
44.50
|
|
|
|
|
|
|
|
|
|
