Twist drill bit HSS DIN 338 TYPE RN
Twist drill HSS DIN 338 type RN REDSTRIPE
DRL-TWST-MET-DIN338-HSS-D4,2MM
REDSTRIPE
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Quick drilling
- Web thinning ensure less friction during drilling and therefore less feed force needed
- The optimized point grinding with short designed working length enable quick drilling by using cordless and wired drill at construction site and in assembly
Self-centering
The crosswise grinding ensures an excellent centering effect even on domed surfaces, eliminating the need for center-punching or piloting
The drill shank is turned from the 13.0 mm dia. to a 12.7 mm dia.
Datasheets(X)
Material to be processed | Steel |
Standard / drilling depth | DIN 338 / 5xD |
Diameter (Ø) | 4.20 mm |
Length (l1) | 75 mm |
Chip flute length (l2) | 43 mm |
Shank style | Cylindrical |
Surface | Plain |
Cutting material | HSS |
Angle of the tip | 118 Degree |
Service life (points system) | 2 of 4 points |
Drilling speed (point system) | 2 of 4 points |
Bore hole quality (point system) ( ) | 2 of 4 points |
Versatility (points system) | 2 of 4 points |
Drilling behaviour (point system) | 2 of 4 points |
Suitable for drill (points system) | 2 of 4 points |
Suitable for cordless drills (points system) | 2 of 4 points |
Suitable for upright drilling machine (points system) | 1 of 4 points |
Self-centring | Yes |
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