Which materials is this Red Cobalt metal drill bit suitable for?

Made of HSS-E steel with 5% cobalt, it is suitable for stainless steel, acid-resistant steel, and tough metals with tensile strength over 1000 N/mm².

Is this 10,2 mm drill bit suitable for tapping M12 threads?

Yes, a 10,2 mm diameter is the standard pilot drill size for tapping metric M12 internal threads.

What are the dimensions and shank type of this drill bit?

It features a 10,2 mm diameter, a 10,2 mm cylindrical shank, a total length of 133 mm, and a working length of 87 mm according to DIN 338.

Do you need to center punch before drilling?

No, the 135° split point tip centers instantly on contact and prevents walking, eliminating the need for center punching.

How many drill bits are included in this package?

This pack includes 5 identical Milwaukee Red Cobalt 10,2x133 mm metal drill bits.

MILWAUKEE 4932471143 HSS-G Cobalt metal drill bit 10.2x133mm (5 pcs)

Name: MILWAUKEE 4932471143 HSS-G Cobalt metal drill bit 10.2x133mm (5 pcs)
Brand: MILWAUKEE
SKU: 08069398
Price: 53.8 EUR
Availability: PreOrder

Supplier number: MILWAUKEE 4932471143 | EAN 4058546287719

Recommended Retail Price €107.15

53.80 tax incl.

€44.46 excl. VAT (incl. all environmental contributions)

On order: delivered from 27/10/2026

pack

Ordered before 20:00 - delivered as of 27/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Reliable drilling in tough metal alloys

Practical benefits

Heat resistance with cobalt: With this Milwaukee cobalt alloy, you drill easily into tough steels and stainless steel without premature wear.
Precise start without wandering: The 135° split point tip ensures immediate centring on metal surfaces without requiring a centre punch.
Fast chip evacuation rate: Built to DIN 338 standards, the flute geometry quickly ejects chips to reduce heat build-up during drilling.

In a nutshell

The right choise for

With the Milwaukee Red Cobalt hss-g metal drill bit set, you drill accurately and effortlessly through tough materials such as stainless steel, cast iron, and heat-resistant alloys. Crafted from solid hss-e steel with a 5% cobalt content, these bits resist extreme heat build-up and premature wear. The 135° split point tip ensures immediate centring on contact without wandering or the need for a centre punch. With a 10.2 mm diameter, you achieve the exact pilot hole size required for tapping metric M12 internal threads. Built to din 338 standards, the flute geometry quickly ejects chips to keep drilling cool and smooth. This 5-piece pack of 10.2x133 mm drill bits delivers dependable performance in demanding fabrication.

Product information FAQ

€53.80

tax incl.

Key features according to our expert

Diameter: 10,2 mm
Cutting length: 87 mm
Drill bit type: Metal drill bit
Overall length: 133 mm
Shank size: 10,2 mm
Shank type: Cylindrical
Material (drill bit): HSS-E Co 5%
Standard: DIN 338
Number of cutting edges: 2

Product description

Metal drill bits ground from solid, extremely heat resistant 5% cobalt-alloyed high speed steel produced according to DIN 338.
Suitable for drilling high alloy content steels and metals with tensile strengths over 1000 N/mm² like stainless steel.
QUAD EDGE Tip: unique combination of 135° split point and four cutting edges: 135° split point allows for precise & fast drilling start without walking. Four cutting edges create smaller chips to prevent heat build up for longer life.
Variable flute geometry: For faster material ejection. Helps the bit run cooler and prevent it from burning out faster.
Enhanced tapered web: Wider core towards the shank of the drill bit. Strengthens the core to increase overall flute durability.
3-flat shank from Ø 5 mm for better grip and prevents chuck slippage.
Colour: bronze.

All Features

Diameter: 10,2 mm
Cutting length: 87 mm
Drill bit type: Metal drill bit
Overall length: 133 mm
Shank size: 10,2 mm
Shank type: Cylindrical
Material (drill bit): HSS-E Co 5%
Standard: DIN 338
Number of cutting edges: 2
Overall length (mm): 133
Working length (mm): 87

Brand MILWAUKEE
08069398
EAN 4058546287719
Supplier number MILWAUKEE 4932471143

Frequently asked questions about this product

Answered by specialists

Which materials is this Red Cobalt metal drill bit suitable for?: Made of HSS-E steel with 5% cobalt, it is suitable for stainless steel, acid-resistant steel, and tough metals with tensile strength over 1000 N/mm².
Is this 10,2 mm drill bit suitable for tapping M12 threads?: Yes, a 10,2 mm diameter is the standard pilot drill size for tapping metric M12 internal threads.
What are the dimensions and shank type of this drill bit?: It features a 10,2 mm diameter, a 10,2 mm cylindrical shank, a total length of 133 mm, and a working length of 87 mm according to DIN 338.
Do you need to center punch before drilling?: No, the 135° split point tip centers instantly on contact and prevents walking, eliminating the need for center punching.
How many drill bits are included in this package?: This pack includes 5 identical Milwaukee Red Cobalt 10,2x133 mm metal drill bits.