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Threading Taps |
 Wrought aluminium alloys Si < 6%(long-chipping) |
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DIN 371  130A T130A AC130A DL130A |
DIN 376 - 374 - 5156  130 T130 AC130 DL130 |
COATING     |
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  ≤ 2 x d1  |
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| Machine tap with spiral point, driving the chips ahead. Interrupted thread. Chamfer lead 4-5 threads (DIN-Form B). Rake angle 17º÷20º measured in the 3rd thread. |
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