# Abraboro HSS-Co Cobalt Drill Bit DIN 338, 4.0 mm

**URL:** https://aio.lv/en/product--abraboro-ab00010402--12433891
**Data updated:** 2026-05-14 09:57 (EEST)
**Category:** Drill Bits
**Manufacturer:** Abraboro
**Manufacturer code:** AB00010402
**EAN:** 5999082002741
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Abraboro HSS-Co cobalt drill bit, manufactured according to DIN 338 standards, is a high-performance tool designed for drilling in hard materials, including stainless steel and alloyed steels. With a 4.0 mm diameter, this drill bit offers excellent heat resistance and durability, ensuring precise and efficient performance in professional metalworking applications.

## Long description

The Abraboro HSS-Co cobalt drill bit, measuring 4.0 mm in diameter, is a precision-engineered tool designed for demanding metalworking tasks. Manufactured in accordance with DIN 338 standards, this drill bit features a high-speed steel composition enriched with cobalt, which significantly enhances its hardness and thermal stability when working with challenging materials.
Advantages
The primary benefit of this cobalt drill bit is its exceptional heat resistance, which prevents the cutting edge from softening during prolonged use in high-friction environments. Its robust construction ensures minimal deflection and high dimensional accuracy, allowing for clean and precise holes in tough alloys. The specialized geometry of the bit facilitates efficient chip removal, reducing the risk of clogging and extending the overall service life of the tool.
Suitable for
Drilling into stainless steel and acid-resistant steel
Working with high-tensile alloyed steels
General metalworking and industrial maintenance
Precision drilling in cast iron and non-ferrous metals
When it may not be suitable
This drill bit is not optimized for drilling in soft materials like wood or plastics, where standard HSS bits are more cost-effective and efficient. It is also not intended for masonry or concrete applications, as the cutting geometry is specifically designed for metal shearing.
Key specifications
Diameter: 4.0 mm
Material: HSS-Co (Cobalt-enriched high-speed steel)
Standard: DIN 338
Application: Metal drilling
How to use
To achieve the best results, secure the workpiece firmly in a vice or clamp to prevent vibration. Use a drill press or a stable hand drill with a sharp, controlled feed rate. It is recommended to use a suitable cutting oil or coolant to further improve the finish and prolong the life of the drill bit, especially when working with stainless steel. Apply steady, moderate pressure and allow the bit to cut rather than forcing it through the material.
What to consider before purchase
Ensure the drill chuck capacity supports a 4.0 mm shank diameter
Verify the material hardness of your workpiece
Consider using a center punch to prevent the bit from wandering at the start of the hole
Usage recommendations
Always wear appropriate eye protection and ensure the drill bit is properly seated in the chuck before starting the operation. Avoid overheating the bit by using appropriate drilling speeds and cooling agents.

## 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 Abraboro 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 Abraboro 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

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