DIN 371
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DIN 376 - 374 - 5156
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COATING |
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| W627A |
W627 |
TiAlN+WC/C coating (Titanium Aluminium Nitride + Tungsten carbide) |
Special High speed steel class E with vanadium |
Machine tap with 38° right- hand spiral flutes, driving the chips to the back |
| TV627A |
TV627 |
TiN coating (Titanium nitride)+ Steam oxide surface treatment |
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Machine tap with internal axial coolant feed |
| C627A |
C627 |
TiCN coating (Titanium Carbon Nitride) |
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Starting from the 5th thread, back tapered thread portion to reduce friction and improve swarf clearance |
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Form C (chamfer lead 2-3 threads) |