# Step drill bit Irwin 10502854 — stepped diameter up to 35 mm, for drilling sheet metal and plastics

**URL:** https://aio.lv/en/product--irwin-10502854--6336360
**Data updated:** 2026-03-07 15:15 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10502854
**EAN:** 0038548111056
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 101.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 83.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10502854--6336360

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Irwin 10502854 is a step drill bit with a maximum drill diameter of 3.5 cm (35 mm). Designed for progressively enlarging holes in thin materials, it is suitable for sheet metal, plastics and similar substrates. Use with compatible hand drills or drill drivers to create multiple hole sizes without changing bits; practical for electrical, HVAC and fabrication tasks.

## Long description

Irwin 10502854 is a step drill bit designed to cut progressively larger holes up to 35 mm in thin materials such as sheet metal and plastics. The single-flute geometry and self-centring point enable controlled cutting and accurate hole positioning without the need for a separate centre punch. Manufactured from industrial-grade M7 high-speed steel and fitted with a flatted shank, this stepped bit is intended for use with standard handheld drills and drill drivers where multiple hole sizes are required without frequent bit changes.
Advantages
The single-flute design provides smooth chip evacuation and improved control when drilling into sheet metal, while the unique flute profile supports the formation of round holes. The self-centring tip reduces walking at the start of drilling, improving accuracy and reducing the need for pre-marking. Constructed from M7 high-speed steel, the bit offers wear resistance suitable for repeated use in metal and plastic, and the flatted shank improves grip in the chuck to minimise slipping during operation.
Suitable for
 Drilling holes in sheet metal panels and enclosures
 Creating openings in plastic panels and thin polymer sheets
 Electrical and HVAC installations where multiple hole sizes are required
 Fabrication or maintenance tasks that need progressive hole enlargement
Key specifications
 Maximum drilled diameter: up to 35 mm
 Material: M7 high-speed steel
 Flute type: single flute with unique profile for round holes
 Tip: self-centring point to reduce walking
 Shank: flatted shank to prevent slipping in the chuck
 Suitable substrates: sheet metal and plastics (thin materials)
How to use
Mark the desired hole centre and secure the workpiece to prevent movement. Fit the step drill bit into a compatible drill or drill driver, ensuring the flatted shank seats firmly in the chuck. Start drilling at low speed to engage the self-centring tip, apply steady axial pressure, and increase speed as the bit progresses through successive steps. Use moderate cutting force and allow the single flute to evacuate chips; withdraw periodically if chips accumulate. For metal applications, use appropriate cutting lubricant to extend bit life and improve cutting performance.
Usage recommendations
For best results when drilling sheet metal, clamp the workpiece, use a light cutting fluid for heat management, and operate at controlled speeds. Avoid excessive axial force which can reduce hole quality and increase wear. The bit is intended for thin materials—do not attempt deep plunging in thick stock beyond the specified stepped diameter.

## Specifications

| Feature | Value |
|---|---|
| Proper use | Drill |
| Suitable for materials | Sheet metal |
| Drill bit diameter | 35 mm |
| Drill bit type | Step drill bit |

## FAQ

### How much does the Step drill bit Irwin 10502854 cost, and is it available for purchase?

The price is 101.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Step drill bit Irwin 10502854 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Irwin products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Irwin service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/6336360/59426671_large.webp