bosch_2608587427
bosch_2608587427
bosch_2608587427
bosch_2608587427
bosch_2608587427
bosch_2608587427

BOSCH 2608587427 step drill bit HSS 10-4, 10 x 125.5 mm

Supplier number: BOSCH 2608587427 | EAN 3165140630214
Recommended Retail Price €293.62
142.80 tax incl.
€118.02 excl. VAT (incl. all environmental contributions)
On order: delivered from 09/10/2026
blister

  • Delivery by DHL

Precise sheet metal drilling

Practical benefits
  • Multiple diameters in one: You drill clean holes from M10 to M40 without swapping accessories during work.
  • Immediate start without punching: The split-point tip lets you drill accurately straight away without center punching your workpiece.
  • Secure Bosch chuck grip: The 10 mm 3-flat shank prevents slipping in your chuck during high-torque applications.

In a nutshell

The right choise for

With this Bosch hss step drill bit, you drill and enlarge clean holes from M10 to M40 in thin sheet steel, non-ferrous metals, and plastic without switching accessories. The integrated split-point tip delivers immediate, accurate spot-drilling without prior center punching. As you step up to larger diameters, hole edges are deburred automatically while preventing thin sheet deformation. Thanks to the 10 mm 3-flat shank, this 125.5 mm drill bit remains securely clamped in your chuck without slipping. This lets you install cable glands and conduit fittings in electrical cabinets quickly and with full control.



€142.80
tax incl.

Product information

Key features according to our expert

  • Smallest diameter: 10 mm
  • Largest diameter: 40 mm
  • Shank size: 10 mm

Product description

  • Step drill bit HSS 10-4, 10 x 125.5 mm
  • Smooth drilling of various diameters with one drill bit
  • HSS step drill bit can drill smooth holes of various diameters with one drill bit
  • Pre-punching is unnecessary as the split tip enables easy drilling

Advantages

  • Drilling various diameters - The HSS step drill bit can make 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 will last a long time if 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
10 mm
Largest diameter
40 mm
Shank size
10 mm
Implementation
HSS
Overall length mm
125,5
Shaft diameter mm
10
Stair height mm
6/4
Stair diameter (range) mm
M10-M40
  • Brand BOSCH
  • EAN 3165140630214
  • Supplier number BOSCH 2608587427

Frequently asked questions about this product

Answered by specialists
Which hole diameters can you drill with this step drill bit?
This bit features 16 steps covering diameters from 10 mm to 40 mm (M10 to M40).
What type of shank does this step drill bit have?
It has a 10 mm 3-flat shank to prevent slipping in the drill chuck.
Which materials is this HSS bit suitable for?
It is suitable for thin materials such as sheet steel, non-ferrous metals, and plastics.
Do you need to center-punch before drilling?
No, the split-point tip allows easy and precise spot-drilling without center-punching.
What is the total length of the drill bit?
The total length of this step drill bit is 125.5 mm.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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