BOSCH 2608587431 step drill bit HSS-TiN 6-39, 10 x 93.5 mm

Name: BOSCH 2608587431 step drill bit HSS-TiN 6-39, 10 x 93.5 mm
Brand: BOSCH
SKU: 02790244
Price: 109.8 EUR
Availability: PreOrder

Supplier number: BOSCH 2608587431 | EAN 3165140630252

Recommended Retail Price €260.49

109.80 tax incl.

€90.74 excl. VAT (incl. all environmental contributions)

On order: delivered from 05/11/2026

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Ordered before 20:00 - delivered as of 05/11/2026
Shipping costs €6.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Clean drilling with this Bosch step bit

Practical benefits

Multiple diameters in one bit: You drill and deburr hole sizes from 6 to 39 mm effortlessly without needing multiple drill bits.
Fast starts without slipping: The split point enables immediate drilling without center punching, while the three-flat shank prevents slipping in the chuck.
Extended durability and smoothness: The TiN-coated HSS construction with spiral flute optimizes chip removal and ensures long service life.

In a nutshell

The right choise for

With the Bosch 2608587431 step drill bit, you drill and deburr clean holes from 6 to 39 mm without swapping accessories. Its TiN-coated hss construction with a spiral flute ensures smooth chip removal and extended tool life across sheet steel, stainless steel, non-ferrous metals, and plastic. The split-point tip allows for instant, precise spot drilling without the need for pre-drilling or center punching, preventing sheet metal deformation and snagging. Additionally, the 10 mm 3-flat shank provides a secure grip in your drill chuck to prevent slipping. Ideal for electrical enclosures, ductwork, and fabrication, this 12-step bit delivers maximum control on every job.

Product information FAQ

€109.80

tax incl.

Key features according to our expert

Smallest diameter: 6 mm
Largest diameter: 39 mm
Shank size: 10 mm

Product description

Step drill bit HSS-TiN 6-39, 10 x 93.5 mm
Smooth drilling of various diameters with one drill bit
HSS-TiN step drills can produce smooth holes of various diameters with a single drill bit
Pre-punching is unnecessary as the split tip enables easy drilling

Advantages

Drilling various diameters - The HSS step drill bit can drill smooth, burr-free holes of various diameters with a single drill bit.
The drill bit is ideal for deburring, drilling round holes and enlarging existing holes.
Pre-punching is unnecessary as the split tip allows easy drilling.
The CNC ground spiral groove offers optimised chip removal and reduced vibration for uniform drilling.
Axial and radial back grinding ensure excellent cutting performance and absolute smoothness.
This step drill is suitable for use on thin materials, such as non-ferrous metals, sheet plastic, sheet steel, plastic and stainless steel.
The step drill is made of HSS (High-Speed Steel) and coated with TiN (titanium nitride).
This ensures an exceptionally long service life when coolant is used.
Using laser, the hole diameters in both spiral grooves are clearly visible and durably marked.
In addition, the 3-surface shank prevents slipping in the chuck and ensures high torque transfer.
3-surface shank for drills.

All Features

Smallest diameter: 6 mm
Largest diameter: 39 mm
Shank size: 10 mm
Implementation: HSS-TiN
Overall length mm: 93,5
Shaft diameter mm: 10
Stair height mm: 4
Stair diameter (range) mm: 6-39
Stair diameter (all) mm: 6 / 9 / 12 / 15 / 18 / 21 / 24 / 27 / 30 / 33 / 36 / 39

Brand BOSCH
02790244
EAN 3165140630252
Supplier number BOSCH 2608587431

Frequently asked questions about this product

Answered by specialists

Which hole diameters can you drill with this step drill bit?: It features 12 steps to drill hole diameters from 6 mm up to 39 mm in thin materials.
Which materials is this HSS-TiN bit suitable for?: It is suitable for sheet steel, stainless steel, non-ferrous metals, and plastics.
What type of shank does this drill bit have?: It has a 10 mm 3-flat shank that prevents slipping inside the drill chuck.
Is center punching or pre-drilling required?: No, the split-point tip allows direct and precise spot drilling without center punching.
What are the benefits of the TiN coating?: The titanium nitride coating extends tool life and wear resistance, especially when using coolant.