|
HSS-E Machine Tap for blind holes
for BSF - Thread
universal tool
DIN 371 / DIN 374
Form C (2-3 xP) 40°
BSF= British Standard Fine Thread Series (parallel, cylindrical)
BSW and BSF are the Thread selections for commercial screws and nuts. The Fine Thread, which is widespread in the Britisch machine tool industry, is superseded by the American UNF Thread
| d1 |
P |
I1 |
I2 |
I3 |
d2 |
a |
Drillø mm |
DIN |
| 1/4-26 |
26 |
80 |
12 |
30 |
7,0 |
5,5 |
5,30 |
371 |
| 5/16-22 |
22 |
90 |
15 |
35 |
8,0 |
6,2 |
6,80 |
371 |
| 3/8-20 |
20 |
100 |
18 |
39 |
10,0 |
8,0 |
8,30 |
371 |
| 7/16-18 |
18 |
100 |
15 |
|
8,0 |
6,2 |
9,70 |
374 |
| 1/2-16 |
16 |
100 |
15 |
|
9,0 |
7,0 |
11,10 |
374 |
| 3/4-12 |
12 |
110 |
17 |
|
14,0 |
11,0 |
16,75 |
374 |
| 1-10 |
10 |
140 |
20 |
|
18,0 |
14,5 |
22,75 |
374 |
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