RS PRO 3-Piece Step Drill Bit Set for Metal, 30mm Max, 4mm Min, HSS Bits

Subtotal (1 unit)*

£106.14

(exc. VAT)

£127.37

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 62 unit(s) shipping from 01 October 2025
  • Plus 11 unit(s) shipping from 01 October 2025
  • Plus 7 unit(s) ready to ship from another location
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£106.14

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

RS Stock No.:
232-608
Distrelec Article No.:
304-18-678
Brand:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

Drilling Application

Metal

Drill Bit Type

Step Drill Bit

Material

HSS

Number of Pieces

3

Minimum Size

4mm

Maximum Size

30mm

Set Contents

Step Drill Bits

RoHS Status: Exempt

COO (Country of Origin):
GB

RS PRO High-Speed Steel (HSS) Step Drill Bit


RS PRO range of HSS step drill bits. These high-speed steel multi-diameter cutters require no pilot hole and are ideal for the rapid drilling of sheet metals and plastics. Their stepped cone shape allows for multiple diameter cutting surfaces on one drill. These drill bits can be used with power drills with a 13 mm chuck.

Step Drill Bit Options:-
232-557 - 4 to 20 mm Drill Bit, 9 Steps
232-563 - 4 to 30 mm Drill Bit, 14 Steps
232-579 - 10 to 20 mm Drill Bit, 11 Steps
232-585 - 20 to 30 mm Drill Bit, 11 Steps
232-608 - 3 piece Drill Set 4 mm to 30 mm

Features and Benefits:


  • HSS drill bits

  • Provides clear holes in applications requiring small hole size increments

  • No pilot hole required easily enlarges existing holes

  • Ideal for use with most power drills

Application Information


Step drill bits are typically used in electrical, plumbing and HVAC applications. They are used for drilling multiple sized holes without the need to frequently change bit sizes. They are compatible with corded or cordless power tools.

FAQs


Why would you buy a step drill?

A step drill is a single piece accessory with optimised flute angles. It offers a unique tip design that eliminates movement and increases drilling speed. They are compatible with any power tool that incorporates a chuck, for example; cordless drill drivers

What material will it drill through?
Typical materials include:
Stainless steel
Carbon steel
Soft metals
Plastics

How good step drill bits?
A step drill bit is an accessory that gets overlooked, the working principle is so simple you can drill multiple size holes without changing the bit and achieve a nice clean finish every time.

Can a step drill bit be used with a stationary drill machine?
Yes, step drill bits are compatible with portable hand power tools as well a stationary drilling machines.

RS PRO offers this exceptional step drill bit set made from HSS for high-performance, offering a range of hole diameters, giving you maximum versatility. Capable of cutting holes from 4 mm to 30 mm through three different cone cutters. These High-Speed Steel (HSS) cutters are constructed from a single piece of high-speed steel, thus reducing breaking and blunting under heat or stress. The stepped tapered design makes it easier to enlarge holes if requirements change for example.

Typical Applications


HSS Step drill bits can be are suitable for use on steel sheets and non-ferrous metals, which include aluminium, copper, brass, zinc and iron. It can be used for drilling applications involving plastic and wood.

Features and Benefits


Provides clear holes in applications requring small hole size increments

No pilot hole required easily enlarges existing holes

Capable of cutting holes from 4 mm to 30 mm diameters

Ideal for use with most power drills

Supplied in a moulded Metal box

FAQ's


Q. What is the difference between a Cone Cutter and Step Drill Bit?


A. A cone cutter is a smooth sided bit that can make any sized hole, on a variety of materials.

A step cutter has parallel measurements up the cone, gradually getting bigger. These are great if you need to cut sized holes with reasonable accuracy. These bits are also capable of cutting through various materials.

Related links