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HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM) HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM) HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM)
HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM) - 1
HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM) - 2
HSS SMART STEP stepped twist drill bit - DRL-STEP-SPRL-SMARTSTEP-(D4-20MM) - 3

HSS SMART STEP stepped twist drill bit

Stepped twist drill bit HSS SMART STEP
DRL-STEP-SPRL-SMARTSTEP-(D4-20MM)
ZEBRA SMART STEP

Art.-no. 0694450420
EAN 4065746562171
All versions

Prices for customers after login
HSS SMART STEP stepped twist drill bit

Art.-no. 0694450420

Prices for customers after login
Quantity
PU
x 1 pcs

Exclusively for trade customers

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Stepped drill bit with unique SMART STEP technology and dynamically curved rake between the individual step transitions for extremely fast and comfortable use in all common materials with a material thickness of up to 3.5 mm.

Dynamically curved rake between each step transition


  • Significantly longer service life compared to conventional stepped drill bits

  • Significantly faster drilling compared to conventional stepped drill bits

  • Little effort required

  • Smooth, perfectly controlled drilling process

  • Greatly reduced formation of burrs


SMART STEP technology


  • Up to 3x faster tapping compared to conventional stepped drill bits

  • Precision tapping without centring or centre-punching

  • No warping of sheet metal

  • Simple boring or enlarging of an existing drill hole

  • No rattling or catching in the material

  • Precise, circular drilling without tearing or splintering


Deep-ground spiral flute


Excellent chip removal



3-flat shank


  • 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


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



Available exclusively from Würth

Product information

Würth Catalogue

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Application area
  • The ideal tool for machining sheet metal.

  • Centring, spot drilling, boring and deburring of sheet metal, tubes and profiles in one operation, for use on both hand drills and stationary equipment.

  • Ideal for use in electrical trade, plumbing and heating systems, automotive workshops, mechanical engineering, switch cabinet manufacturing or container and equipment engineering.
Instructions
  • Ensure that there is sufficient coolant/lubricant

  • Observe the rotation speed table

  • Do not push during boring. The stepped drill bit automatically retracts into the sheet metal

Min./max. drill diameter

4-20 mm

Shank diameter

8 mm

Shaft length

24 mm

Length

71.5 mm

Shank style

3-face shank

Surface

Uncoated

Material to be processed

Steel
Cast metal
Non-ferrous metal
Plastic
Wood

Art. no.Number of stepsDiameter of the drilling area [mm]
0694450330143.5/5.5/7.5/9.5/11.5/13.5/15.5/17.5/19.5/21.5/23.5/25.5/27.5/29.5
069445041294.0/5.0/6.0/7.0/8.0/9.0/10.0/11.0/12.0
069445042094.0/6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0
069445042194.0/6.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0
0694450429134.5/6.5/8.5/10.5/12.5/14.5/16.5/18.5/20.5/22.5/24.5/26.5/28.5
0694450529135.0/7.0/9.0/11.0/13.0/15.0/17.0/19.0/21.0/23.0/25.0/27.0/29.0
0694450630136.0/8.0/10.0/12.0/14.0/16.0/18.0/20.0/22.0/24.0/26.0/28.0/30.0
0694450637126.0/9.0/12.5 (PG7)/15.2 (PG9)/18.6 (PG11)/20.4 (PG13.5)/22.5 (PG16)/26.0/28.3 (PG21)/30.5/34.0/37.0 (PG29)
0694450639126.0/9.0/12.0/15.0/18.0/21.0/24.0/27.0/30.0/33.0/36.0/39.0
0694450640166.5/8.5/10.5/12.5/14.5/16.5/18.5/20.5/23.5/25.5/28.0/30.5/32.5/35.5/38.5/40.5
Cutting values
For dia. 4.0-12.0 and dia. 4.0-20.0
Material designationTensile strengthvcn
dia. 4.0-12.0
art. 		dia. 4.0-20.0
art.
Drilling (1st drilling step)toDrilling (1st drilling step)to
Steels
General structural steels≤ 700 N/mm²2318006001800360
Unalloyed quenched and tempered steels≤ 700 N/mm²2318006001800360
≤ 900 N/mm²1915005001500300
Low-alloy quenched and tempered steels≤ 700 N/mm²2318006001800360
≤ 900 N/mm²1915005001500300
Alloyed quenched and tempered steel≤ 1,200 N/mm²1814004701400280
Nitriding steels≤ 1,200 N/mm²1814004701400280
Tool steels≤ 850 N/mm²1814004701400280
High-speed steels≤ 1,200 N/mm²1814004701400280
Cast metals
Cast iron≤ 350 HB1512004001200250
Spheroidal graphite and malleable iron≤ 350 HB1512004001200250
Non-ferrous metals
Aluminium≤ 450 N/mm²2217005801700350
Aluminium alloys≤ 450 N/mm²2217005801700350
Low-alloy copper≤ 400 N/mm²1915005001500300
Short-chipping brass≤ 850 N/mm²2217005801700350
Long-chipping brass≤ 850 N/mm²2217005801700350
Plastics
Thermosetting plastics 1915005001500300
Thermoplastic plastics 1915005001500300
Cutting values
For dia. 3.5-29.5 and dia. 4.5-28.5
Material designationTensile strengthvcn
dia. 3.5-29.5
art. 		dia. 4.5-28.5
art.
Drilling (1st drilling step)toDrilling (1st drilling step)to
Steels
General structural steels≤ 700 N/mm²2320002501600250
Unalloyed quenched and tempered steels≤ 700 N/mm²2320002501600250
≤ 900 N/mm²1917002001300200
Low-alloy quenched and tempered steels≤ 700 N/mm²2320002501600250
≤ 900 N/mm²1917002001300200
Alloyed quenched and tempered steel≤ 1,200 N/mm²1816001601250200
Nitriding steels≤ 1,200 N/mm²1816001601250200
Tool steels≤ 850 N/mm²1816001601250200
High-speed steels≤ 1,200 N/mm²1816001601250200
Cast metals
Cast iron≤ 350 HB1513501601050160
Spheroidal graphite and malleable iron≤ 350 HB1513501601050160
Non-ferrous metals
Aluminium≤ 450 N/mm²2220002401500240
Aluminium alloys≤ 450 N/mm²2220002401500240
Low-alloy copper≤ 400 N/mm²1917002001300200
Short-chipping brass≤ 850 N/mm²2220002401500240
Long-chipping brass≤ 850 N/mm²2220002401500240
Plastics
Thermosetting plastics 1917002001300200
Thermoplastic plastics 1917002001300200
Cutting values
For dia. 5.0-29.0 and dia. 6.0-30.0
Material designationTensile strengthvcn
dia. 5.0-29.0
art. 		dia. 6.0-30.0
art.
Drilling (1st drilling step)toDrilling (1st drilling step)to
Steels
General structural steels≤ 700 N/mm²2315002501200240
Unalloyed quenched and tempered steels≤ 700 N/mm²2315002501200240
≤ 900 N/mm²1912002001000200
Low-alloy quenched and tempered steels≤ 700 N/mm²2315002501200240
≤ 900 N/mm²1912002001000200
Alloyed quenched and tempered steel≤ 1,200 N/mm²181100200950190
Nitriding steels≤ 1,200 N/mm²181100200950190
Tool steels≤ 850 N/mm²181100200950190
High-speed steels≤ 1,200 N/mm²181100200950190
Cast metals
Cast iron≤ 350 HB159501601000150
Spheroidal graphite and malleable iron≤ 350 HB159501601000150
Non-ferrous metals
Aluminium≤ 450 N/mm²2214002401200230
Aluminium alloys≤ 450 N/mm²2214002401200230
Low-alloy copper≤ 400 N/mm²1912002001000200
Short-chipping brass≤ 850 N/mm²2214002401200230
Long-chipping brass≤ 850 N/mm²2214002401200230
Plastics
Thermosetting plastics 1912002001000200
Thermoplastic plastics 1912002001000200
Cutting values
For dia. 6.0-37.0 and dia. 6.0-39.0
Material designationTensile strengthvcn
dia. 6.0-37.0
art. 		dia. 6.0-39.0
art.
Tapping (1st drilling step)toTapping (1st drilling step)to
Steels
General structural steels≤ 700 N/mm²2312002001200190
Unalloyed hardened steels≤ 700 N/mm²2312002001200190
≤ 900 N/mm²1910001501000150
Low-alloy hardened steels≤ 700 N/mm²2312002001200190
≤ 900 N/mm²1910001501000150
Alloyed hardened steels≤ 1,200 N/mm²18950150950140
Nitriding steels≤ 1,200 N/mm²18950150950140
Tool steels≤ 850 N/mm²18950150950140
High-speed steels≤ 1,200 N/mm²18950150950140
Cast metals
Cast iron≤ 350 HB1510001201000120
Spheroidal graphite and malleable iron≤ 350 HB1510001201000120
Non-ferrous metals
Aluminium≤ 450 N/mm²2212001901200180
Aluminium alloys≤ 450 N/mm²2212001901200180
Low-alloy copper≤ 400 N/mm²1910001501000150
Short-chipping brass≤ 850 N/mm²2212001901200180
Long-chipping brass≤ 850 N/mm²2212001901200180
Plastics
Thermosetting plastics 1910001501000150
Thermoplastic plastics 1910001501000150
Cutting values
dia. 6.0-40.5
Material designationTensile strengthvcn
dia. 6.0-40.5
art.
Tapping (1st drilling step)to
Steels
General structural steels≤ 700 N/mm²231200180
Unalloyed hardened steels≤ 700 N/mm²231200180
≤ 900 N/mm²191000150
Low-alloy hardened steels≤ 700 N/mm²231200180
≤ 900 N/mm²191000150
Alloyed hardened steels≤ 1,200 N/mm²18950140
Nitriding steels≤ 1,200 N/mm²18950140
Tool steels≤ 850 N/mm²18950140
High-speed steels≤ 1,200 N/mm²18950140
Cast metals
Cast iron≤ 350 HB151000120
Spheroidal graphite and malleable iron≤ 350 HB151000120
Non-ferrous metals
Aluminium≤ 450 N/mm²221200170
Aluminium alloys≤ 450 N/mm²221200170
Low-alloy copper≤ 400 N/mm²191000150
Short-chipping brass≤ 850 N/mm²221200170
Long-chipping brass≤ 850 N/mm²221200170
Plastics
Thermosetting plastics 191000150
Thermoplastic plastics 191000150
Key
vc = cutting speed [m/min]
n = rotation speed [rpm]
The suggested cutting values are reference values and must be adapted to the respective conditions.

Art.-no.
Cust. Mat. No.

Hazardous Material

Product information

Würth Catalogue

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Datasheets ()

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