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SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 1
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 2
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 3
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 4
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 5
SMART STEP EU+ HSCo twist drill bit DIN 338 - DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5 - 6

SMART STEP EU+ HSCo twist drill bit DIN 338

Twist drill bit SMART STEP EU+ HSCo DIN 338
DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D2,5
ZEBRA SMART STEP

Art.-no. 0626910250
EAN 4099618626517
All versions

Prices for customers after login
SMART STEP EU+ HSCo twist drill bit DIN 338

Art.-no. 0626910250

Prices for customers after login
Quantity
PU

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The universal 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 almost all materials without tearing or splintering



Extremely comfortable drilling


  • Precise tapping without running off centre

  • Simple boring or enlarging of an existing drill hole

  • Angled drilling possible

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

  • Burr-free hole exit


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



The first twist drill bit to enable precise, hand-guided drilling up to dia. 20 mm without pre-drilling


  • Shank reduced to dia. 12.7 mm from > 13.0 mm bore diameter for use in all standard three-jaw drill chucks


Ideal for drilling out rivets and stud bolts



Ideal for drilling in round material or pipes with stringent requirements for centring, precision and service life, e.g. in railing construction



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 drill gradually 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

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

  • For universal use in almost all materials, such as stainless steel (e.g. V2A, V4A), heat-resistant steels and titanium. Also for general applications in conventional steel up to 1,300 N/mm², as well as in cast iron, aluminium, plastic, non-ferrous metals and hard and soft wood.

  • Perfect for drilling in round tubes (e.g. in railing construction), for drilling out stud bolts, rivet holes, for drilling sheet metal and thin-walled profile materials

  • Ideal for high-precision, comfortable and fast working in solid material

  • Ideal for large drill hole diameters

Suitable for machine type

Drill, Cordless screwdrivers, Pedestal drilling machine

Material to be processed

Steel, Cast iron, Stainless steel, Titanium, Non-ferrous metal, Wood, Hardwood

Quality

ZEBRA-Premium

Standard / drilling depth

DIN 338 / 5xD

Diameter (Ø)

2.5 mm

Length (l1)

57 mm

Chip flute length (l2)

30 mm

Drill tip length (l3)

1.5 mm

Shank style

Cylindrical

Surface

Oxide finish

Cutting material

HSCo

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)

4 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

1300 N/mm²

Material of sub-group

General structural steels, Non-alloyed tempering steels, Alloyed tempering steels, Nitriding steels, Tool steels, High-speed steels, Cast iron, Ductile iron, Malleable cast iron, White cast iron, Stainless steels, sulphurated, Stainless steels, martensitic, Stainless steels, austenitic, Titanium, Titanium alloys, Spring steels, Aluminium, Aluminium alloys, Aluminium casting alloys (<10% silicon), Magnesium alloys, Copper, low-alloyed, Brass, short-chipping, Brass, long-chipping, Bronze, short-chipping, Bronze, long-chipping, Plastics, thermoset, Plastics, thermoplastic

For dia. 16.0-20.0
Material designation Tensile strength from dia. 16.0 from dia. 20.0
≤ dia. 8 > dia. 8 ≤ dia. 10 > dia. 10
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 27 716 1074 0,03 358 537 0,04 573 859 0,035 286 430 0,042
Unalloyed hardened steels ≤ 850 N/mm² 18 27 716 1074 0,03 358 537 0,04 573 859 0,035 286 430 0,042
Low-alloy hardened steels ≤ 850 N/mm² 18 27 716 1074 0,03 358 537 0,04 573 859 0,035 286 430 0,042
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 597 915 0,028 298 457 0,038 477 732 0,031 238 366 0,04
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 597 915 0,028 298 457 0,038 477 732 0,031 238 366 0,04
Alloyed hardened steels ≤ 1,300 N/mm² 10 15 398 597 0,028 199 298 0,038 318 477 0,031 159 238 0,04
Nitriding steels ≤ 1,300 N/mm² 10 15 398 597 0,028 199 298 0,038 318 477 0,031 159 238 0,04
Tool steels ≤ 1,300 N/mm² 10 15 398 597 0,028 199 298 0,038 318 477 0,031 159 238 0,04
High-speed steels ≤ 1,300 N/mm² 10 15 398 597 0,028 199 298 0,038 318 477 0,031 159 238 0,04
Cast iron ≤ 350 HB 15 23 597 915 0,028 298 457 0,038 477 732 0,031 238 366 0,04
Nodular graphite and malleable iron ≤ 350 HB 15 23 597 915 0,028 298 457 0,038 477 732 0,031 238 366 0,04
Stainless steels  1,300 N/mm² 8 12 318 477 0,03 159 238 0,04 254 382 0,031 109 168 0,042
Titanium  850 N/mm² 6 10 239 398 0,028 119 199 0,038 191 318 0,031 79 129 0,04
Aluminium ≤ 600 N/mm² 35 45 1393 1791 0,03 696 895 0,04 1114 1433 0,035 557 716 0,042
Thermosetting plastics 15 23 597 915 0,03 298 457 0,04 477 732 0,035 238 366 0,042
Thermoplastic plastics 15 23 597 915 0,03 298 457 0,04 477 732 0,035 238 366 0,042
Soft and light wood 21 30 836 1194 0,033 418 597 0,044 668 955 0,038 334 477 0,046
Compact and hard wood 18 27 716 1074 0,032 358 537 0,041 573 859 0,036 286 430 0,043
For dia. 10.0-12.5
Material designation Tensile strength from dia. 10.0 from dia. 12.5
≤ dia. 6 > dia. 6 ≤ dia. 6.5 > dia. 6.5
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 27 955 1433 0,027 573 859 0,035 881 1322 0,027 458 687 0,038
Unalloyed hardened steels ≤ 850 N/mm² 18 27 955 1433 0,027 573 859 0,035 881 1322 0,027 458 687 0,038
Low-alloy hardened steels ≤ 850 N/mm² 18 27 955 1433 0,027 573 859 0,035 881 1322 0,027 458 687 0,038
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 796 1220 0,025 477 732 0,031 734 1126 0,025 382 585 0,035
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 796 1220 0,025 477 732 0,031 734 1126 0,025 382 585 0,035
Alloyed hardened steels ≤ 1,300 N/mm² 10 15 530 796 0,025 318 477 0,031 489 734 0,025 254 382 0,035
Nitriding steels ≤ 1,300 N/mm² 10 15 530 796 0,025 318 477 0,031 489 734 0,025 254 382 0,035
Tool steels ≤ 1,300 N/mm² 10 15 530 796 0,025 318 477 0,031 489 734 0,025 254 382 0,035
High-speed steels ≤ 1,300 N/mm² 10 15 530 796 0,025 318 477 0,031 489 734 0,025 254 382 0,035
Cast iron ≤ 350 HB 15 23 796 1220 0,025 477 732 0,031 734 1126 0,025 382 585 0,035
Nodular graphite and malleable iron ≤ 350 HB 15 23 796 1220 0,025 477 732 0,031 734 1126 0,025 382 585 0,035
Stainless steels  1,300 N/mm² 8 12 424 636 0,027 254 382 0,031 391 587 0,027 203 305 0,037
Titanium  850 N/mm² 6 10 318 530 0,025 191 318 0,031 293 489 0,027 153 255 0,035
Aluminium ≤ 600 N/mm² 35 45 1857 2388 0,027 1114 1433 0,035 1714 2204 0,027 891 1146 0,038
Thermosetting plastics 15 23 796 1220 0,027 477 732 0,035 734 1126 0,027 382 585 0,038
Thermoplastic plastics 15 23 796 1220 0,027 477 732 0,035 734 1126 0,027 382 585 0,038
Soft and light wood 21 30 1114 1592 0,03 668 955 0,038 1028 1469 0,03 535 764 0,041
Compact and hard wood 18 27 955 1433 0,03 573 859 0,036 881 1322 0,03 458 687 0,038
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.
Cutting values for SMART STEP EU+ HSCo DIN 338 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 ≤ 1,300 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
Nitriding steels ≤ 1,300 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
Tool steels ≤ 1,300 N/mm² 10 15 3184 4777 0,008 1592 2388 0,01 1273 1910 0,012
High-speed steels ≤ 1,300 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
Stainless steels  1,300 N/mm² 8 12 2547 3821 0,01 1273 1910 0,012 1019 1518 0,014
Titanium  850 N/mm² 6 10 1910 3183 0,008 955 1592 0,01 764 1273 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. 6.3-8.0
Material designation Tensile strength from dia. 6.3 from dia. 8.0
vc n f n f
from to from to from to
General structural steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03
Unalloyed hardened steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03
Low-alloy hardened steels ≤ 850 N/mm² 18 27 909 1364 0,027 716 1074 0,03
Unalloyed hardened steels ≤ 1,000 N/mm² 15 23 758 1162 0,025 597 915 0,028
Low-alloy hardened steels ≤ 1,000 N/mm² 15 23 758 1162 0,025 597 915 0,028
Alloyed hardened steels ≤ 1,300 N/mm² 10 15 505 758 0,025 398 597 0,028
Nitriding steels ≤ 1,300 N/mm² 10 15 505 758 0,025 398 597 0,028
Tool steels ≤ 1,300 N/mm² 10 15 505 758 0,025 398 597 0,028
High-speed steels ≤ 1,300 N/mm² 10 15 505 758 0,025 398 597 0,028
Cast iron ≤ 350 HB 15 23 758 1162 0,025 597 915 0,028
Nodular graphite and malleable iron ≤ 350 HB 15 23 758 1162 0,025 597 915 0,028
Stainless steels  1,300 N/mm² 8 12 404 606 0,027 318 477 0,03
Titanium  850 N/mm² 6 10 303 505 0,025 239 398 0,028
Aluminium ≤ 600 N/mm² 35 45 1769 2274 0,027 1393 1791 0,03
Thermosetting plastics 15 23 758 1162 0,027 597 915 0,03
Thermoplastic plastics 15 23 758 1162 0,027 597 915 0,03
Soft and light wood 21 30 1061 1516 0,03 836 1194 0,033
Compact and hard wood 18 27 909 1364 0,03 716 1074 0,032
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 ≤ 1,300 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
Nitriding steels ≤ 1,300 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
Tool steels ≤ 1,300 N/mm² 10 15 1011 1516 0,015 796 1194 0,018 636 955 0,021
High-speed steels ≤ 1,300 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
Stainless steels  1,300 N/mm² 8 12 808 1213 0,017 636 955 0,02 509 764 0,023
Titanium  850 N/mm² 6 10 606 1011 0,015 477 796 0,018 382 637 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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