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SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM
SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM - 1
SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM - 2
SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM - 3
SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM - 4
SMART STEP EU+ HSS DIN 340 twist drill bit - DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM - 5

SMART STEP EU+ HSS DIN 340 twist drill bit

Twist drill bit SMART STEP EU+ HSS DIN 340
DRL-TWST-MET-DIN340-HSS-SMARTSTEP-D3,8MM
ZEBRA SMART STEP

Art.-no. 0624920380
EAN 4099618232701
All versions

Prices for customers after login
SMART STEP EU+ HSS DIN 340 twist drill bit

Art.-no. 0624920380

Prices for customers after login
Quantity
PU
x 10 pcs

Exclusively for trade customers

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The long SMART STEP twist drill bit with patent-pending stepped drill bit tip geometry with extremely uneven pitch (from dia. 2.5 mm) for even faster, more comfortable drilling with unrivalled precision and service life

Extremely unequal pitch (EU+)


  • Up to 50 % longer service life

  • Significantly more comfortable drilling with less vibration, even less effort required and perfect tool guidance (up to 60 % less torque)

  • Up to 20 % lower energy consumption

  • Up to 15 % faster drilling progress


Precise, circular drilling in a wide range of materials including wood, plastic and acrylic, without tearing or splintering



Extremely comfortable drilling


  • Saves pre-drilling, precise tapping without running off centre

  • Simple boring or enlarging of an existing drill hole

  • Angled drilling possible

  • No rattling or catching - even with thin-walled material

  • Burr-free hole exit


Significantly faster and more energy-efficient drilling compared to conventional HSS twist drill bits



Ideal for drilling out rivets and stud bolts



3-flat shank (from dia. 4 mm)


  • No spinning in the drill chuck: faster, more comfortable working

  • Optimal power transmission

  • Protects the drill chuck from damage

  • Little effort required to loosen and tighten the drill chuck


Available exclusively from WÜRTH



Product packaging made of 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified® Bronze

Notice
  • For blind holes, please note the extended drill tip (see dimension l3)!

  • The steps of the innovative point geometry gradually drill to achieve the required diameter. To achieve this, the chip is broken into small individual chips by several main cutting edges, thus ensuring optimal chip removal. The result is highly precise, circular drilling.

  • The use of several cutting edges at the same time enables very fast, comfortable working and a long service life.
Product information

Würth Catalogue

Datasheets(X)

Certificates/ Documents

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Application area
  • Ideal for use in cordless drills as well as on hand-held, box column and pillar drills

  • Use in steel up to 1,000 N/mm², cast iron, aluminium, copper, brass, bronze, hard and soft wood, plastic (e.g. acrylic glass, HPL, screen printing plates) and composite materials (e.g. plastic profiles with steel core)

  • High quality of drill holes and significantly longer service life compared to conventional twist wood drill bits.

  • Perfect for rivet holes, drilling out stud bolts, drilling sheet metal and thin-walled profile materials (e.g. aluminium/window profiles) and for drilling on round and sloping surfaces, such as pipes.

  • Ideal for high-precision, comfortable and fast working in solid materials (e.g. in steel with strength of up to 1,000 N/mm², aluminium and plastics).

Suitable for machine type

Drill, Cordless screwdrivers, Pedestal drilling machine

Material to be processed

Steel, Cast iron, Non-ferrous metal, Wood, Hardwood

Quality

ZEBRA-Premium

Standard / drilling depth

DIN 340 / 10xD

Diameter (Ø)

3.8 mm

Length (l1)

119 mm

Chip flute length (l2)

78 mm

Drill tip length (l3)

2.4 mm

Shank style

Cylindrical

Surface

Multiple refined

Cutting material

HSS

Service life (points system)

3 of 4 points

Drilling speed (point system)

4 of 4 points

Bore hole quality (point system) ( )

4 of 4 points

Versatility (points system)

3 of 4 points

Drilling behaviour (point system)

4 of 4 points

Suitable for drill (points system)

4 of 4 points

Suitable for cordless drills (points system)

4 of 4 points

Suitable for upright drilling machine (points system)

4 of 4 points

Suitable for milling-drilling centre (points system)

0 - not applicable

Self-centring

Yes

Suitable for tensile strength up to

1000 N/mm²

Material of sub-group

General structural steels, Non-alloyed tempering steels, Cast iron, Ductile iron, Malleable cast iron, Magnesium alloys, Copper, low-alloyed, Brass, short-chipping, Brass, long-chipping, Plastics, thermoset, Plastics, thermoplastic

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.
For dia. 12.5-16.0
Material designation Tensile strength from dia. 12.5 from dia. 16.0
≤ 6.5 > 6.5 ≤ 8 > 8
vc n f n f n f n f
from to from to from to from to from to
General structural steels ≤ 850 N/mm² 18 27 881 1322 0,027 458 687 0,038 716 1074 0,03 358 537 0,04
Unalloyed hardened steels ≤ 850 N/mm² 18 27 881 1322 0,027 458 687 0,038 716 1074 0,03 358 537 0,04
Low-alloy hardened steels ≤ 850 N/mm² 18 27 881 1322 0,027 458 687 0,038 716 1074 0,03 358 537 0,04
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 734 1126 0,025 382 585 0,035 597 915 0,028 298 457 0,038
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 734 1126 0,025 382 585 0,035 597 915 0,028 298 457 0,038
Alloyed hardened steels ≤ 1,200 N/mm² 10 15 489 734 0,025 254 382 0,035 398 597 0,028 199 298 0,038
Nitriding steels ≤ 1,200 N/mm² 10 15 489 734 0,025 254 382 0,035 398 597 0,028 199 298 0,038
Tool steels ≤ 1,200 N/mm² 10 15 489 734 0,025 254 382 0,035 398 597 0,028 199 298 0,038
High-speed steels ≤ 1,200 N/mm² 10 15 489 734 0,025 254 382 0,035 398 597 0,028 199 298 0,038
Cast iron ≤ 350 HB 15 23 734 1126 0,025 382 585 0,035 597 915 0,028 298 457 0,038
Nodular graphite and malleable iron ≤ 350 HB 15 23 734 1126 0,025 382 585 0,035 597 915 0,028 298 457 0,038
Aluminium ≤ 600 N/mm² 35 45 1714 2204 0,027 891 1146 0,038 1393 1791 0,03 696 895 0,04
Thermosetting plastics 15 23 734 1126 0,027 382 585 0,038 597 915 0,03 298 457 0,04
Thermoplastic plastics 15 23 734 1126 0,027 382 585 0,038 597 915 0,03 298 457 0,04
Soft and light wood 21 30 1028 1469 0,03 535 764 0,041 836 1194 0,033 418 597 0,044
Compact and hard wood 18 27 881 1322 0,03 458 687 0,038 716 1074 0,032 358 537 0,041
Cutting values for SMART STEP EU+ HSS DIN 340 twist drill bit
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
General structural steels ≤ 850 N/mm² 18 27 5732 8598 0,01 2866 4299 0,012 2292 3439 0,015
Unalloyed hardened steels ≤ 850 N/mm² 18 27 5732 8598 0,01 2866 4299 0,012 2292 3439 0,015
Low-alloy hardened steels ≤ 850 N/mm² 18 27 5732 8598 0,01 2866 4299 0,012 2292 3439 0,015
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 4777 7324 0,008 2388 3662 0,01 1910 2929 0,012
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 4777 7324 0,008 2388 3662 0,01 1910 2929 0,012
Alloyed hardened steels ≤ 1,200 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
Nitriding steels ≤ 1,200 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
Tool steels ≤ 1,200 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
High-speed steels ≤ 1,200 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
Cast iron ≤ 350 HB 15 23 4777 7324 0,008 2388 3662 0,01 1910 2929 0,012
Nodular graphite and malleable iron ≤ 350 HB 15 23 4777 7324 0,008 2388 3662 0,01 1910 2929 0,012
Aluminium ≤ 600 N/mm² 35 45 11146 14331 0,01 5573 7165 0,012 4458 5732 0,015
Thermosetting plastics 15 23 4777 7324 0,01 2388 3662 0,012 1910 2929 0,015
Thermoplastic plastics 15 23 4777 7324 0,01 2388 3662 0,012 1910 2929 0,015
Soft and light wood 21 30 6688 9554 0,012 3344 4777 0,014 2675 3821 0,017
Compact and hard wood 18 27 5732 8598 0,01 2866 4299 0,013 2292 3439 0,015
For dia. 6.3-10.0
Material designation Tensile strength from dia. 6.3 from dia. 8.0 from dia. 10.0
≤ 6 > 6
vc n f n f n f n f
from to from to from to from to from to
General structural steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03 955 1433 0,027 573 859 0,035
Unalloyed hardened steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03 955 1433 0,027 573 859 0,035
Low-alloy hardened steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03 955 1433 0,027 573 859 0,035
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 758 1162 0,025 597 915 0,028 796 1220 0,025 477 732 0,031
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 758 1162 0,025 597 915 0,028 796 1220 0,025 477 732 0,031
Alloyed hardened steels ≤ 1,200 N/mm² 10 15 505 758 0,025 398 597 0,028 530 796 0,025 318 477 0,031
Nitriding steels ≤ 1,200 N/mm² 10 15 505 758 0,025 398 597 0,028 530 796 0,025 318 477 0,031
Tool steels ≤ 1,200 N/mm² 10 15 505 758 0,025 398 597 0,028 530 796 0,025 318 477 0,031
High-speed steels ≤ 1,200 N/mm² 10 15 505 758 0,025 398 597 0,028 530 796 0,025 318 477 0,031
Cast iron ≤ 350 HB 15 23 758 1162 0,025 597 915 0,028 796 1220 0,025 477 732 0,031
Nodular graphite and malleable iron ≤ 350 HB 15 23 758 1162 0,025 597 915 0,028 796 1220 0,025 477 732 0,031
Aluminium ≤ 600 N/mm² 35 45 1769 2274 0,027 1393 1791 0,03 1857 2388 0,027 1114 1433 0,035
Thermosetting plastics 15 23 758 1162 0,027 597 915 0,03 796 1220 0,027 477 732 0,035
Thermoplastic plastics 15 23 758 1162 0,027 597 915 0,03 796 1220 0,027 477 732 0,035
Soft and light wood 21 30 1061 1516 0,03 836 1194 0,033 1114 1592 0,03 668 955 0,038
Compact and hard wood 18 27 909 1364 0,03 716 1074 0,032 955 1433 0,03 573 859 0,036
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
General structural steels ≤ 850 N/mm² 18 27 1819 2729 0,017 1433 2149 0,02 1146 1719 0,025
Unalloyed hardened steels ≤ 850 N/mm² 18 27 1819 2729 0,017 1433 2149 0,02 1146 1719 0,025
Low-alloy hardened steels ≤ 850 N/mm² 18 27 1819 2729 0,017 1433 2149 0,02 1146 1719 0,025
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 1516 2325 0,015 1194 1831 0,018 955 1464 0,021
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 1516 2325 0,015 1194 1831 0,018 955 1464 0,021
Alloyed hardened steels ≤ 1,200 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
Nitriding steels ≤ 1,200 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
Tool steels ≤ 1,200 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
High-speed steels ≤ 1,200 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
Cast iron ≤ 350 HB 15 23 1516 2325 0,015 1194 1831 0,018 955 1464 0,021
Nodular graphite and malleable iron ≤ 350 HB 15 23 1516 2325 0,015 1194 1831 0,018 955 1464 0,021
Aluminium ≤ 600 N/mm² 35 45 3538 4549 0,016 2786 3582 0,02 2229 2866 0,025
Thermosetting plastics 15 23 1516 2325 0,016 1194 1831 0,02 955 1464 0,025
Thermoplastic plastics 15 23 1516 2325 0,016 1194 1831 0,02 955 1464 0,025
Soft and light wood 21 30 2123 3033 0,018 1672 2388 0,023 1338 1910 0,028
Compact and hard wood 18 27 1819 2729 0,018 1433 2149 0,022 1146 1719 0,027
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