What is this twist drill bit used for?

This 8.5 mm drill bit is designed for pre-drilling tapping holes for M10 threads in unalloyed and alloyed steel, aluminium, and brass.

What type of shank does this drill bit have?

It features an external hexagon shank compatible with the Fein Vario system for bit holders and impact drivers.

What are the dimensions of this twist drill bit?

The drill bit has a diameter of 8.5 mm, an overall length of 90 mm, and a flute or cutting length of 50 mm.

What are the benefits of the TiAlN coating?

The TiAlN coating reduces friction and wear while offering heat resistance up to 800 °C for extended tool life.

Can this drill bit be used with impact drivers?

Yes, its specific cutting geometry and 64 HRC material strength make it suitable for high turning and impact frequencies.

FEIN 63111043010 VARIO spiral drill bit 8.5 mm (M10 thread)

Name: FEIN 63111043010 VARIO spiral drill bit 8.5 mm (M10 thread)
Brand: FEIN
SKU: 08118089
Price: 36.6 EUR
Availability: InStock

Supplier number: FEIN 63111043010 | EAN 4014586476827

Recommended Retail Price €38.48

36.60 tax incl.

€30.25 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 6 products in stock.

Ordered before 20:00 - delivered tomorrow 03/10/2026
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

Precise drilling with Fein

Practical benefits

High heat resistance with TiAlN: The TiAlN coating withstands temperatures up to 800 °C, ensuring minimal wear during high-speed metal drilling.
Ideal for M10 threading: The 8.5 mm diameter lets you produce the exact core hole needed for clean M10 thread cutting.
Built for impact drivers: With a hardened 64 HRC HSS construction, this drill bit withstands high impact frequencies in tough steel.

In a nutshell

The right choise for

With the Fein Vario twist drill bit 8.5 mm, you produce the exact core hole required for clean M10 thread tapping. Engineered with high-strength 64 hrc hss and a heat-resistant TiAlN coating that withstands up to 800 °C, this metal drill bit effortlessly handles high rotational speeds and impact forces in structural steel, aluminium, and brass. The external hexagon shank designed for the Vario system ensures a solid, slip-free fit in your impact driver or bit holder. Featuring a 50 mm cutting length and a 90 mm total length, it gives you the speed, durability, and control needed for demanding metal fabrication.

Product information FAQ

€36.60

In stock - tax incl.

Key features according to our expert

Diameter: 8,5 mm
Drill bit type: Metal drill bit
Overall length: 90 mm
Shank type: External hexagon
Material (drill bit): HSS
Surface treatment (drill bit): TiAlN
Number of cutting edges: 2 ea
Cutting length: 50 mm

Product description

VARIO spiral drill bit 8.5 mm (M10 thread)
Long service life, thanks to high material strength (64 HRC), special cutting geometries suitable for impact screwdrivers and a TiAlN (titanium-aluminium-nitride) coating. The accessories are low-wear and low-friction as well as heat-resistant up to 800 °C and can therefore be used with high turning and impact frequencies in steel up to 900 N/mm2.
Optimally suitable for the following materials: unalloyed and alloyed steels up to 900 N/mm², aluminium, brass.

All Features

Diameter: 8,5 mm
Drill bit type: Metal drill bit
Overall length: 90 mm
Shank type: External hexagon
Material (drill bit): HSS
Surface treatment (drill bit): TiAlN
Number of cutting edges: 2 ea
Cutting length: 50 mm
Coating: Titanium-aluminium nitride (TiAlN)
Spiral length: 50 mm
Tube ø: 8.5 mm
L: 90 mm
Strength: 64 HRC
Tool holder: VARIO bit shank
Material: HSS
Heat resistance: max. 800°C

Brand FEIN
08118089
EAN 4014586476827
Supplier number FEIN 63111043010

Frequently asked questions about this product

Answered by specialists

What is this twist drill bit used for?: This 8.5 mm drill bit is designed for pre-drilling tapping holes for M10 threads in unalloyed and alloyed steel, aluminium, and brass.
What type of shank does this drill bit have?: It features an external hexagon shank compatible with the Fein Vario system for bit holders and impact drivers.
What are the dimensions of this twist drill bit?: The drill bit has a diameter of 8.5 mm, an overall length of 90 mm, and a flute or cutting length of 50 mm.
What are the benefits of the TiAlN coating?: The TiAlN coating reduces friction and wear while offering heat resistance up to 800 °C for extended tool life.
Can this drill bit be used with impact drivers?: Yes, its specific cutting geometry and 64 HRC material strength make it suitable for high turning and impact frequencies.