Machine taps for BSF, British Standard Fine
BSF is the fine series of the Whitworth system: the same 55° flank angle, but more threads per inch. Common on British vehicles and machines. Machine taps cut the thread in a single pass and run in a drilling machine, a machining centre or a tapping attachment.
VÖLKEL offers 20 versions to ISO 529, in HSS-G, from BSF 3/16 x 32 to BSF 1" x 10. Lead forms B and C cover through holes and blind holes.
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All sizes at a glance
20 articles in 1 series. The article number links straight to the tool.
Machine Tap ISO 529 HSS-G
| Threadnominal size | Tapping drillØ in mm | Form B | Form C 35° Spiral Flute |
|---|---|---|---|
| BSF 3/16 x 32 | – | 85510 | 85710 |
| BSF 1/4 x 26 | 5.2 | 85514 | 85714 |
| BSF 5/16 x 22 | 6.6 | 85516 | 85716 |
| BSF 3/8 x 20 | 8.1 | 85518 | 85718 |
| BSF 7/16 x 18 | 9.5 | 85520 | 85720 |
| BSF 1/2 x 16 | 11 | 85522 | 85722 |
| BSF 5/8 x 14 | 14 | 85526 | 85726 |
| BSF 3/4 x 12 | 16.5 | 85530 | 85730 |
| BSF 7/8 x 11 | 19.5 | 85534 | 85734 |
| BSF 1" x 10 | 22.5 | 85538 | 85738 |
Tapping drill: drill diameter recommended by VÖLKEL (Technical Information “Tapping drill sizes”).
