What drilling diameters does this step drill bit provide?

The Facom 229A.ST2 features 13 steps: 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, and 39 mm.

Is a pilot hole required before drilling?

No, the self-centering split point tip eliminates the need for pre-drilling or pilot holes.

What type of shank does the Facom 229A.ST2 have?

It features a 10 mm cylindrical shank with 3 flats to prevent slippage in the drill chuck.

Which materials can you drill with this step drill bit?

Made of HSS steel, it is engineered for precise, burr-free cylindrical drilling in sheet metal and all standard materials.

How can you check the hole size during drilling?

The diameter markings are clearly laser-etched inside the flute for easy identification.

FACOM 229A.ST2 stepped drill (4 mm - 39 mm)

Name: FACOM 229A.ST2 stepped drill (4 mm - 39 mm)
Brand: FACOM
SKU: 41295676
Price: 140.2 EUR
Availability: InStock

Supplier number: FACOM 229A.ST2 | EAN 3148516301413

Recommended Retail Price €231.06

140.20 tax incl.

€115.87 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 03/10/2026
Free shipping
Delivery by DHL
Lifetime warranty on Facom? Or limited in time? Read more about it here.

✆ Talk to a specialist

High precision stepped drilling with Facom

Practical benefits

Thirteen diameters in one: With step increments from 4 to 39 mm, you create various hole sizes without changing tools.
Secure non slip grip: The shank with three flats prevents slipping in the chuck and ensures reliable torque transfer.
Effortless self centering start: The cross ground point centers automatically so you can start drilling immediately without a pilot hole.

In a nutshell

The right choise for

With the Facom 229A.ST2 step drill bit, you create precise holes in various sizes quickly and without swapping tools. Featuring thirteen steps from 4 to 39 mm, it lets you power through sheet metal and thin-walled materials with ease, making it ideal for cutouts in electrical switchboard panels or fabrication work. The self-centering split point tip bites immediately so you can start drilling without any pilot hole, delivering clean, burr-free edges every time. The 10 mm cylindrical shank with three flats prevents slippage in the drill chuck, giving you dependable torque transfer, reduced vibration, and full control over your work.

Product information FAQ

€140.20

In stock - tax incl.

Key features according to our expert

Smallest diameter: 4 mm
Shank size: 10 mm
Number of steps: 13
Supplier warranty: FACOM - Legal warranty applicable
Largest diameter: 39 mm

Product description

Tapped drills
For cylindrical and precise drilling in all materials.
No pre-drilling required.
Cross-grinding: self-centring.
More powerful cutting edge: user needs to apply less force, no burrs.
HSS steel
Better drainage of drill chips.
Less vibration, quieter.
Cylindrical shank with 3 bumping edges, for good drive preventing micro-blocking.
Laser marking of the different diameters in a groove.
678006: Especially for ISO threads.
678014: Especially for PG threads.

All Features

Smallest diameter: 4 mm
Shank size: 10 mm
Number of steps: 13
Supplier warranty: FACOM - Legal warranty applicable
Largest diameter: 39 mm
Carbide version: Yes
Number of drilling steps: 13
Cutting material: HSS
Max. drilling diameter (mm): 39
With deburring machine: Yes
Number of cutting edges: 13
With cooling channel: No
Min. drill diameter (mm): 4
Shaft diameter (mm): 10
Interchangeable centring tip: Yes
Spiral groove: Yes
Cutting direction: Right
Blunt nose tip: No

Brand FACOM
41295676
EAN 3148516301413
Supplier number FACOM 229A.ST2
Warranty Lifetime warranty on Facom? Or limited in time? Read more about it here.

Frequently asked questions about this product

Answered by specialists

What drilling diameters does this step drill bit provide?: The Facom 229A.ST2 features 13 steps: 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, and 39 mm.
Is a pilot hole required before drilling?: No, the self-centering split point tip eliminates the need for pre-drilling or pilot holes.
What type of shank does the Facom 229A.ST2 have?: It features a 10 mm cylindrical shank with 3 flats to prevent slippage in the drill chuck.
Which materials can you drill with this step drill bit?: Made of HSS steel, it is engineered for precise, burr-free cylindrical drilling in sheet metal and all standard materials.
How can you check the hole size during drilling?: The diameter markings are clearly laser-etched inside the flute for easy identification.