Product features:
HSS-Co5
Steam tempered.
DIN 338.
Type VA
Tip angle: 130°.
Profile ground with cross grinding.
right-hand cutting
For drilling even at the highest temperature loads.
With 3-surface shaft - prevents twisting in the drill chuck
For materials with higher alloy content and strength over 800 N/mm².
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Technical data:
Coating: steam tempered.
Nominal diameter: 4 mm.
Total length: 75 mm.
Spiral length: 43 mm.
Shaft design: 3-surface shaft.
Tip angle: 130°.
Type: VA
Working length: 43 mm.
Standard: DIN 338.
Cutting material: HSS-Co5.
Drilling depth: 5xd
Brand: PROMAT
Cutting direction: right.
Feed in steel up to 800 N: 0.05 mm/U
Quality: profile-polished.
Box contents:
10 x Promat twist drill bits DIN 338 type VA nominal diameter 4 mm HSS-Co5 steam started, 3-surface shaft, 5 x d, right