Quantity discount

kwb COBALT Twist Drill 4.0 mm

4 mm
Save CHF1.– CHF4.40/1pcs.
8Ratings
Delivered between Tue, 28.4. and Wed, 29.4.
6 pieces in stock at supplier
Free shipping starting at 50.–

Drill diameter21

Product details

The Cobalt spiral drill bit with a diameter of 4.0 mm from kwb is a high-precision metal drill designed specifically for machining various metals, including alloyed and unalloyed steel. This drill is distinguished by its cobalt alloy, which offers increased heat resistance and durability, making it ideal for demanding applications. The drill features a 135° point angle and a cross-cut according to DIN 1412 C, ensuring a self-centering function and enhancing drilling efficiency. The cylindrical shank allows for easy handling and compatibility with standard drill machines. With its precision-ground surface and industrial quality, this spiral drill bit is a reliable choice for professional users and hobbyists who value quality and performance.

  • Cobalt alloyed 5% for increased heat resistance
  • Precision-ground for optimal drilling performance
  • 135° point angle with cross-cut for self-centering drilling
  • Suitable for hard-to-machine materials like stainless steel and cast iron
  • Cylindrical shank for easy handling and compatibility with standard drills.

Key specifications

Metal type
Cobalt
Material application
Grey cast iron, Metal, Plastic, Steel
Drill diameter
4 mm
Length
22.70 cm

General information

Item number
6156952
Manufacturer
kwb
Category
Drill bit insert
Manufacturer no.
248640
Release date
17.10.2022
Sales rank in Category Drill bit insert
359 of 31411

Colour

Colour
Bronze
Exact colour description
Bronze

Material

Metal type
Cobalt
Material group
Metal
Material
Cobalt Alloy High-Speed Steel (HSS-Co)

Drill bit properties

Drill Type
Twist Drill
Material application
Grey cast iron, Metal, Plastic, Steel
surface finish
Burnished
DIN standard
338
Suitable for
Metal, Steel
borehole size
4 mm
Point angle
135°
Point angle
135°

Origin

Country of origin
Germany

Voluntary climate contribution

CO₂ emissions
0.11 kg
Climate contribution
CHF 0.11

Scope of delivery

Scope of delivery
1 piece

Packaging

Items per sales unit
1x

Product dimensions

Drill diameter
4 mm
working length
43 mm
Length
22.70 cm
Width
0.50 cm
Weight
20 g

Package dimensions

Length
22.80 cm
Width
5.30 cm
Height
0.80 cm
Weight
14 g

30-day right of return
24 Months Warranty (Bring-in)
9 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Drill bit insert» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 1.Famag
    0 %
  • 1.Futuro BRW
    0 %
  • 1.kwb
    0 %
  • 1.Neriox
    0 %
  • 1.Ruko
    0 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • kwb
    Not enough data
  • 1.Bosch Professional Zubehör
    0 days
  • 1.DeWalt
    0 days
  • Alpen
    Not enough data
  • BGS
    Not enough data

Return rate

How often is a product of this brand in the «Drill bit insert» category returned?

Source: Digitec Galaxus
  • 22.Bosch Zubehör
    1 %
  • 22.DeWalt
    1 %
  • 22.kwb
    1 %
  • 22.Stahlwerk
    1 %
  • 26.Famag
    1.1 %
Source: Digitec Galaxus