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HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM) HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM) HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM)
HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM) - 1
HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM) - 2
HSS SMART STEP sheet metal conical drill bit - SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM) - 3

HSS SMART STEP sheet metal conical drill bit

Sheet metal conical drill bit HSS SMART STEP
SHTMETCONIDRL-SMARTSTEP-SZ8-(D5-31MM)
ZEBRA SMART STEP

Art.-no. 0694456031
EAN 4065746557559
All versions

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The sheet metal conical drill bit with unique SMART STEP technology and spiral groove for extremely fast, comfortable and precise use in all common materials with a material thickness of up to 4 mm.

SMART STEP technology


  • Up to 3x faster tapping compared to conventional sheet metal conical drill bits

  • Up to 50 % longer service life compared to conventional sheet metal conical drill bits

  • Significantly less effort required when drilling compared to conventional sheet metal conical drill bits

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

  • Comfortable, stepless boring or enlarging of an existing drill hole

  • Burr-free drilling without deformation of the sheet metal

  • Precise, circular drilling


Deep-ground spiral flute


Excellent chip removal



Laser scaling in the flute


Easy reading of the hole diameter during the drilling process



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 universal tool for large, stepless drilling in 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 the 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 sheet metal conical drill bit automatically retracts into the sheet metal.

Size

8

Min./max. drill diameter

5-31 mm

Length

103 mm

Shank diameter

9 mm

Cutting material

HSS

Shank style

3-face shank

Surface

Uncoated

For dia. 40.0-61.0
Material designation Tensile strength vc n
Dia. 40.0-61.0
Art.
Tapping (1st drilling step) to
Steels
General structural steels ≤ 700 N/mm² 15 110 80
Unalloyed quenched and tempered steels ≤ 700 N/mm² 15 110 80
≤ 900 N/mm² 11 85 55
Low-alloy quenched and tempered steels ≤ 700 N/mm² 15 110 80
≤ 900 N/mm² 11 85 55
Alloyed quenched and tempered steels ≤ 1,300 N/mm² 9 70 45
Nitriding steels ≤ 1,300 N/mm² 9 70 45
Tool steels ≤ 1,300 N/mm² 9 70 45
High-speed steels ≤ 1,300 N/mm² 9 70 45
Cast metals
Cast iron ≤ 350 HB 15 110 80
Spheroidal graphite and malleable iron ≤ 350 HB 12 90 60
Non-ferrous metals
Aluminium ≤ 450 N/mm² 18 140 90
Aluminium alloys ≤ 450 N/mm² 17 140 90
Low-alloy copper ≤ 400 N/mm² 17 140 90
Short-chipping brass ≤ 850 N/mm² 18 140 90
Long-chipping brass ≤ 850 N/mm² 17 140 90
Plastics
Plastics, thermosetting 26 200 130
Plastics, thermoplastic 24 190 125
For dia. 24.0-40.0 and dia. 36.0-50.0
Material designation Tensile strength vc n
Dia. 24.0-40.0
Art. 		Dia. 36.0-50.0
Art.
Tapping (1st drilling step) to Tapping (1st drilling step) to
Steels
General structural steels ≤ 700 N/mm² 15 200 120 130 100
Unalloyed quenched and tempered steels ≤ 700 N/mm² 15 200 120 130 100
≤ 900 N/mm² 11 140 85 95 70
Low-alloy quenched and tempered steels ≤ 700 N/mm² 15 200 120 130 100
≤ 900 N/mm² 11 140 85 95 70
Alloyed quenched and tempered steels ≤ 1,300 N/mm² 9 120 75 80 60
Nitriding steels ≤ 1,300 N/mm² 9 120 75 80 60
Tool steels ≤ 1,300 N/mm² 9 120 75 80 60
High-speed steels ≤ 1,300 N/mm² 9 120 75 80 60
Cast metals
Cast iron ≤ 350 HB 15 200 120 130 100
Spheroidal graphite and malleable iron ≤ 350 HB 12 160 100 105 75
Non-ferrous metals
Aluminium ≤ 450 N/mm² 18 250 150 150 110
Aluminium alloys ≤ 450 N/mm² 17 250 150 150 110
Low-alloy copper ≤ 400 N/mm² 17 250 150 150 110
Short-chipping brass ≤ 850 N/mm² 18 250 150 150 110
Long-chipping brass ≤ 850 N/mm² 17 250 150 150 110
Plastics
Plastics, thermosetting 26 350 200 230 160
Plastics, thermoplastic 24 350 200 220 150
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.
For dia. 5.0-31.0 and dia. 16.0-30.5
Material designation Tensile strength vc n
Dia. 5.0-31.0
Art. 		Dia. 16.0-30.5
Art.
Tapping (1st drilling step) to Tapping (1st drilling step) to
Steels
General structural steels ≤ 700 N/mm² 15 950 150 290 150
Unalloyed quenched and tempered steels ≤ 700 N/mm² 15 950 150 290 150
≤ 900 N/mm² 11 700 110 200 110
Low-alloy quenched and tempered steels ≤ 700 N/mm² 15 950 150 290 150
≤ 900 N/mm² 11 700 110 200 110
Alloyed quenched and tempered steels ≤ 1,300 N/mm² 9 550 100 180 100
Nitriding steels ≤ 1,300 N/mm² 9 550 100 180 100
Tool steels ≤ 1,300 N/mm² 9 550 100 180 100
High-speed steels ≤ 1,300 N/mm² 9 550 100 180 100
Cast metals
Cast iron ≤ 350 HB 15 950 150 290 150
Spheroidal graphite and malleable iron ≤ 350 HB 12 750 120 240 125
Non-ferrous metals
Aluminium ≤ 450 N/mm² 18 1100 200 360 200
Aluminium alloys ≤ 450 N/mm² 17 1100 200 360 200
Low-alloy copper ≤ 400 N/mm² 17 1100 200 360 200
Short-chipping brass ≤ 850 N/mm² 18 1100 200 360 200
Long-chipping brass ≤ 850 N/mm² 17 1100 200 360 200
Plastics
Plastics, thermosetting 26 1600 300 550 300
Plastics, thermoplastic 24 1500 250 500 250
For dia. 3.0-14.0 and dia. 5.0-20.0
Material designation Tensile strength vc n
Dia. 3.0-14.0
Art. 		dia. 5.0-20.0
art. and
Tapping (1st drilling step) to Tapping (1st drilling step) to
Steels
General structural steels ≤ 700 N/mm² 15 1500 350 950 250
Unalloyed quenched and tempered steels ≤ 700 N/mm² 15 1500 350 950 250
≤ 900 N/mm² 11 1100 300 700 180
Low-alloy quenched and tempered steels ≤ 700 N/mm² 15 1500 350 950 250
≤ 900 N/mm² 11 1100 300 700 180
Alloyed quenched and tempered steels ≤ 1,300 N/mm² 9 900 200 550 140
Nitriding steels ≤ 1,300 N/mm² 9 900 200 550 140
Tool steels ≤ 1,300 N/mm² 9 900 200 550 140
High-speed steels ≤ 1,300 N/mm² 9 900 200 550 140
Cast metals
Cast iron ≤ 350 HB 15 1500 350 950 250
Spheroidal graphite and malleable iron ≤ 350 HB 12 1250 270 750 190
Non-ferrous metals
Aluminium ≤ 450 N/mm² 18 1800 450 1100 350
Aluminium alloys ≤ 450 N/mm² 17 1800 400 1100 350
Low-alloy copper ≤ 400 N/mm² 17 1800 400 1100 350
Short-chipping brass ≤ 850 N/mm² 18 1800 450 1100 350
Long-chipping brass ≤ 850 N/mm² 17 1800 400 1100 350
Plastics
Plastics, thermosetting 26 2600 600 1600 400
Plastics, thermoplastic 24 2500 550 1500 400
Additional accessory:
 
Product
Description
Quantity
PU
Price
/PU

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Example 3: Flat washer with an internal diameter of 6 mm:
VVVVAAABBB
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Datasheets()

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