# Step drill bit Smart365 4–12 mm HSS for metal and sheet, Smart365

**URL:** https://aio.lv/en/product--smart365-11-s10412--11719030
**Data updated:** 2026-03-08 11:21 (EET)
**Category:** Drill Bits
**Manufacturer:** Smart365
**Manufacturer code:** 11-S10412
**EAN:** 5901769687981
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Step drill bit Smart365, HSS construction, diameter range 4–12 mm. Designed for drilling stepped holes in thin metal, sheet, plastic and similar materials. Single-piece stepped cutting profile allows progressive enlargement of holes without tool changes. Suitable for hand drills and drill presses for metalworking, automotive and electrical panel tasks.

## Long description

Step drill bit Smart365 4–12 mm HSS for metal and sheet is a single-piece stepped twist drill designed for creating and enlarging round holes in thin metals, sheet materials and plastics. The HSS construction and stepped cutting profile allow continuous drilling from 4 mm up to 12 mm in one operation without changing bits. The geometry is optimized for clean hole edges and efficient chip evacuation when used with hand drills and drill presses in metalworking, automotive and electrical panel tasks.
Advantages
The stepped design permits progressive hole enlargement with a single tool, reducing tool changes and setup time. High-speed steel (HSS) material offers a balance of hardness and toughness for drilling thin metal sheets and plastics. The single-piece construction ensures concentricity across steps, improving hole accuracy and minimizing walking. The fluting and point geometry provide steady chip removal and reduced heat build-up under typical working speeds.
Suitable for
Drilling and enlarging holes in thin steel sheets and non-ferrous metal panels
Electrical enclosures and control panels
Automotive bodywork and light fabrication tasks
Plastic panels and composite sheet materials
Key specifications
Material: high-speed steel (HSS)
Diameter range: 4 mm to 12 mm (stepped profile)
Cutting style: single-piece stepped flute
Intended materials: thin metal sheets, non-ferrous metals, plastics
Compatible tools: hand drills and drill presses
How to use
Secure the workpiece and mark the drilling position. Fit the step drill into the drill chuck and tighten securely. Start at low to moderate speed and align the drill perpendicular to the surface to prevent walking. Apply steady, moderate feed pressure and allow the bit to progressively cut through each step until reaching the desired diameter. Use lubrication when drilling steel to extend tool life and improve surface finish. After drilling, retract the bit while running briefly to clear chips and avoid clogging.
Usage recommendations
For best results on steel sheets, use cutting fluid and moderate RPMs; for plastics and non-ferrous metals, higher speeds with light feed deliver cleaner edges. Avoid side loads and excessive force to preserve the cutting edges and concentricity of the steps.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 Smart365 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 Smart365 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/11719030/67100363_large.webp