# Drill bit AWTools AW40953 Step twist drill 4–39 mm AICrN black

**URL:** https://aio.lv/en/product--awtools-aw40953--11536595
**Data updated:** 2026-03-08 08:37 (EET)
**Category:** Drill Bits
**Manufacturer:** AWTools
**Manufacturer code:** AW40953
**EAN:** 5903678616175
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--awtools-aw40953--11536595

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Step twist drill bit AWTools AW40953 with a stepped diameter range from 4 to 39 mm. Made with AICrN coating and black finish, this multi-step twist drill is designed for drilling varying hole sizes without tool changes. Suitable for metalworking, thin sheet materials and general workshop tasks where progressive hole enlargement is required.

## Long description

The AWTools AW40953 Step twist drill 4–39 mm AICrN black is a stepped drill designed to drill a range of hole sizes with a single tool. Manufactured by AWTools, this step twist drill covers diameters from 4 mm up to 39 mm in progressive steps and features an AICrN (aluminum chromium nitride) coating with a black finish for improved surface hardness and wear resistance. The tool is intended for metalworking, thin sheet materials and general workshop applications where sequential hole enlargement or deburring is required without repeatedly changing drills.
Advantages
The AICrN coating increases surface hardness and reduces friction, extending tool life when working with ferrous and non-ferrous metals. The stepped geometry enables rapid progressive drilling and consistent hole concentricity across multiple diameters, reducing setup time. The design minimizes the need for multiple drills and simplifies hole-sizing operations, while the black finish helps resist corrosion and provides visual indication of a coated cutting surface.
Suitable for
Drilling and enlarging holes in sheet metal and thin plates
Progressive hole sizing in workshop and maintenance tasks
Fabrication tasks where multiple hole diameters are required
Deburring and chamfering of drilled openings
Key specifications
Diameter range: 4 mm to 39 mm in stepped increments
Coating: AICrN (aluminum chromium nitride) for increased hardness and reduced friction
Finish: black coated surface
Type: stepped twist drill (single-piece step design)
Intended materials: metals, thin sheets and similar workshop materials
How to use
Secure the workpiece firmly and select an appropriate drilling speed for the material being processed. Center-punch the drilling location to ensure accurate starts, then position the step drill in a suitable drill chuck. Apply steady axial pressure and begin drilling at a moderate speed; allow the stepped geometry to cut progressively through each diameter. Retract periodically to clear chips and prevent heat buildup. Use cutting fluid when working with tougher metals to improve surface finish and prolong tool life.
Usage recommendations
Use caution when drilling at larger diameters and maintain proper clamping and steady feed to avoid chatter. For best results on thicker material or hardened steel, use progressive pecking, adequate cutting fluid and ensure the drill remains sharp; replace the tool when wear affects hole quality.

## FAQ

### How much does the AWTools step twist drill AW40953 4–39 mm cost, and is it available for purchase?

The price is 18.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 108 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 06.07.2026 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. All transactions are 100% secure and encrypted.

### 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 AWTools 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 AWTools 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/11536595/68532901_large.webp