Machine taps for UNF left-hand thread
The left-hand version of the Unified fine thread, for rotating parts and clamping elements. Machine taps cut the thread in a single pass and run in a drilling machine, a machining centre or a tapping attachment.
VÖLKEL offers 24 versions to DIN 371 and DIN 376, in HSSE, from UNF No. 10 x 32 to UNF 1" x 14. Lead forms B and C cover through holes and blind holes.
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All sizes at a glance
24 articles in 2 series. The article number links straight to the tool.
Machine Tap DIN 376 HSSE left hand thread
| Threadnominal size | Tapping drillØ in mm | Form B | Form C 35° SP |
|---|---|---|---|
| UNF 7/16 x 20 LH | 9.9 | 76220 | – |
| UNF 1/2 x 20 LH | 11.5 | 76222 | 76232 |
| UNF 9/16 x 18 LH | 12.9 | 76223 | 76233 |
| UNF 5/8 x 18 LH | 14.5 | 76224 | 76234 |
| UNF 3/4 x 16 LH | 17.5 | 76225 | 76235 |
| UNF 7/8 x 14 LH | 20.25 | 76226 | 76236 |
| UNF 1" x 12 LH | 23.25 | 76227 | 76237 |
| UNF 1" x 14 LH | – | 76228 | 76238 |
Machine Tap DIN 371 HSSE left hand thread
| Threadnominal size | Tapping drillØ in mm | Form B | Form C 35° SP |
|---|---|---|---|
| UNF No. 10 x 32 LH | 4.1 | 76205 | 76215 |
| UNF 1/4 x 28 LH | 5.5 | 76207 | 76217 |
| UNF 5/16 x 24 LH | 6.9 | 76208 | 76218 |
| UNF 3/8 x 24 LH | 8.5 | 76209 | 76219 |
| UNF 7/16 x 20 LH | 9.9 | 76210 | – |
Tapping drill: drill diameter recommended by VÖLKEL (Technical Information “Tapping drill sizes”).
