Twist drill bit HSS DIN 338 type RN 118°
Twist drill HSS DIN 338 type RN
DRL-TWST-MET-DIN338-HSS-D3,1MM



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The affordable, robust steel assembly drill bit for applications in steel up to 850 N/mm² strength.
Excellent break resistance
Chipless manufacturing process
Ideal for construction site and assembly applications that do not require high precision
Robust and durable design
Excellent adhesive capability of coolant lubricants and reduced tendency for material to build up
Vaporised surface
The dia. 13.0 mm drill shank is reduced to dia. 12.7 mm
Datasheets(X)
Suitable for machine type | Drill |
Material to be processed | Steel |
Quality | Würth-Standard |
Standard / drilling depth | DIN 338 / 5xD |
Diameter (Ø) | 3.1 mm |
Length (l1) | 65 mm |
Chip flute length (l2) | 36 mm |
Shank style | Cylindrical |
Surface | Vaporised |
Cutting material | HSS |
Type | RN |
Angle of the tip | 118 Degree |
Service life (points system) | 2 of 4 points |
Drilling speed (point system) | 1 of 4 points |
Bore hole quality (point system) ( ) | 1 of 4 points |
Versatility (points system) | 1 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 |
Suitable for milling-drilling centre (points system) | 1 of 4 points |
Self-centring | No |
Suitable for tensile strength up to | 850 N/mm² |
Material of sub-group | General structural steels |
Cutting values | ||||||||||||
For dia. 1.0-2.5 | ||||||||||||
Material designation | Tensile strength | from dia. 1.0 | from dia. 2.0 | from dia. 2.5 | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 12 | 20 | 4200 | 6300 | 0,050 | 1800 | 2800 | 0,060 | 1500 | 2300 | 0,070 |
Unalloyed quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 4200 | 6300 | 0,050 | 1800 | 2800 | 0,060 | 1500 | 2300 | 0,070 |
Low-alloy quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 4200 | 6300 | 0,050 | 1800 | 2800 | 0,060 | 1500 | 2300 | 0,070 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 5,5 | 12 | 2500 | 3800 | 0,030 | 1050 | 1600 | 0,035 | 830 | 1250 | 0,040 |
For dia. 3.15-5.0 | ||||||||||||
Material designation | Tensile strength | from dia. 3.15 | from dia. 4.0 | from dia. 5.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 12 | 20 | 1200 | 1800 | 1,000 | 780 | 1200 | 0,120 | 630 | 950 | 0,150 |
Unalloyed quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 1200 | 1800 | 1,000 | 780 | 1200 | 0,120 | 630 | 950 | 0,150 |
Low-alloy quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 1200 | 1800 | 1,000 | 780 | 1200 | 0,120 | 630 | 950 | 0,150 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 5,5 | 12 | 650 | 1000 | 0,050 | 530 | 800 | 0,060 | 420 | 650 | 0,070 |
For dia. 6.3-10.0 | ||||||||||||
Material designation | Tensile strength | from dia. 6.3 | from dia. 8.0 | from dia. 10.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 12 | 20 | 500 | 750 | 0,160 | 340 | 520 | 0,180 | 270 | 420 | 0,200 |
Unalloyed quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 500 | 750 | 0,160 | 340 | 520 | 0,180 | 270 | 420 | 0,200 |
Low-alloy quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 500 | 750 | 0,160 | 340 | 520 | 0,180 | 270 | 420 | 0,200 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 5,5 | 12 | 330 | 500 | 0,080 | 200 | 300 | 0,100 | 150 | 230 | 0,120 |
For dia. 12.5-20.0 | ||||||||||||
Material designation | Tensile strength | from dia. 12.5 | from dia. 16.0 | from dia. 20.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 12 | 20 | 220 | 330 | 0,250 | 160 | 240 | 0,280 | 130 | 190 | 0,300 |
Unalloyed quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 220 | 330 | 0,250 | 160 | 240 | 0,280 | 130 | 190 | 0,300 |
Low-alloy quenched and tempered steels | ≤ 850 N/mm² | 12 | 20 | 220 | 330 | 0,250 | 160 | 240 | 0,280 | 130 | 190 | 0,300 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 5,5 | 12 | 125 | 190 | 0,150 | 72 | 110 | 0,180 | 60 | 90 | 0,200 |
Key |
vc = cutting speed [m/min] |
f = feed [mm/r] |
n = rotation speed [rpm] |
The suggested cutting values are reference values and must be adapted to the respective conditions. |