Which materials is this drill bit suitable for?

It is suitable for stainless steel (inox), alloyed and non-alloyed steel, cast iron, cast steel, and acid- and heat-resistant steel.

What are the dimensions of this metal drill bit?

The drill bit has a diameter of 4 mm, a working length of 43 mm, and a total length of 75 mm.

What type of shank does this drill bit feature?

It has a 4 mm cylindrical straight shank compatible with three-jaw drill chucks on drills and drill presses.

What is the benefit of the cobalt alloy?

The HSS alloy with 5% cobalt (HSS-E) provides high wear and heat resistance, making it ideal for tough metals like stainless steel.

How many drill bits are included in this pack?

This pack contains 10 drill bits.

BOSCH 2608585880 metal drill bit HSS-Co, DIN 338, 4 x 43 x 75 mm (10 pieces)

Name: BOSCH 2608585880 metal drill bit HSS-Co, DIN 338, 4 x 43 x 75 mm (10 pieces)
Brand: BOSCH
SKU: 02221655
Price: 12.8 EUR
Availability: PreOrder

Supplier number: BOSCH 2608585880 | EAN 3165140521154

Recommended Retail Price €29.33

12.80 tax incl.

€10.58 excl. VAT (incl. all environmental contributions)

On order: delivered from 22/10/2026

blister

Delivery by DHL

✆ Talk to a specialist

Precise stainless steel drilling with Bosch

Practical benefits

High heat and wear resistance: With a 5% cobalt alloy, you drill smoothly through tough stainless steel without premature overheating or wear.
Immediate centering without wandering: The 135° split point prevents slipping on smooth surfaces, allowing you to start clean holes instantly.
Rapid and smooth chip removal: Two flutes and sharp cutting edges clear debris quickly so you maintain fast drilling speeds and extended life.

In a nutshell

The right choise for

Drill through tough metals cleanly and efficiently with the Bosch Pro SSteel HSS-Co metal drill bit. Engineered with a 5% cobalt hss alloy, it delivers superior heat and wear resistance when working with demanding materials such as stainless steel, cast iron, and alloyed steel. The 135° split point ensures immediate centering without wandering on smooth surfaces, while two sharp cutting edges quickly clear metal chips to extend tool life. Featuring a 4 mm diameter, a 43 mm working length, and a cylindrical shank conforming to din 338, it fits standard three-jaw chucks seamlessly. This 10-piece pack provides a reliable supply for intensive metal fabrication tasks.

Product information FAQ

€12.80

tax incl.

Key features according to our expert

Diameter: 4 mm
Drill bit type: Metal drill bit
Overall length: 75 mm
Shank size: 4 mm
Shank type: Cylindrical
Material (drill bit): HSS-E Co 5%
Standard: DIN 338
Number of cutting edges: 2
Number per blister: 10
Cutting length: 43 mm

Product description

Metal drill bit HSS-Co, DIN 338, 4 x 43 x 75 mm 10x
Long service life when drilling in stainless steel
HSS spiral drill cobalt lasts a long time when drilling in stainless steel.
Cobalt alloy and fully ground HSS ensure wear resistance and heat resistance

Advantages

Long service life - The HSS spiral drill cobalt lasts a long time when drilling in stainless steel.
This longer life is due to the steel alloy containing 5% cobalt and the fully ground HSS (High-Speed Steel), which offers excellent surface quality, wear resistance and heat resistance.
Thanks to two cutting edges and two grooves, chips are quickly removed, making the drill bit last even longer.
This drill is suitable for alloyed and unalloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steel.
This drill bit is suitable for alloyed and unalloyed steel, stainless steel, cast iron, cast steel and acid- and heat-resistant steel.
The drill has a cylindrical shank (drill bit and shank have the same diameter) and is intended for use in drill stands and drill/screw machines.
The HSS cobalt spiral drill bit is produced in accordance with DIN 338.
The drill bit is type N (groove angle) with a tip of 135 degrees and a diameter tolerance of h8.
The pointed split point ensures active cutting action and perfect centring without running.
Cylindrical shank compatible with three-claw drill chucks.

All Features

Diameter: 4 mm
Drill bit type: Metal drill bit
Overall length: 75 mm
Shank size: 4 mm
Shank type: Cylindrical
Material (drill bit): HSS-E Co 5%
Standard: DIN 338
Number of cutting edges: 2
Number per blister: 10
Cutting length: 43 mm
Diameter (d) mm: 4
Overall length (l2) mm: 75
Useful length (l1) mm: 43

Brand BOSCH
02221655
EAN 3165140521154
Supplier number BOSCH 2608585880

Frequently asked questions about this product

Answered by specialists

Which materials is this drill bit suitable for?: It is suitable for stainless steel (inox), alloyed and non-alloyed steel, cast iron, cast steel, and acid- and heat-resistant steel.
What are the dimensions of this metal drill bit?: The drill bit has a diameter of 4 mm, a working length of 43 mm, and a total length of 75 mm.
What type of shank does this drill bit feature?: It has a 4 mm cylindrical straight shank compatible with three-jaw drill chucks on drills and drill presses.
What is the benefit of the cobalt alloy?: The HSS alloy with 5% cobalt (HSS-E) provides high wear and heat resistance, making it ideal for tough metals like stainless steel.
How many drill bits are included in this pack?: This pack contains 10 drill bits.