# ALPEN HSS Cobalt Twist Drill Bit, 4x75mm, DIN 338 RN, 3-Flat Shank

**URL:** https://aio.lv/en/product--alpen-0065500400100--12451604
**Data updated:** 2026-05-18 02:51 (EEST)
**Category:** Drill Bits
**Manufacturer:** ALPEN
**Manufacturer code:** 0065500400100
**EAN:** 9002741303489
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alpen-0065500400100--12451604

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The ALPEN HSS Cobalt twist drill bit is a high-performance tool designed for drilling into hard materials, including stainless steel. Featuring a 4mm diameter and a 3-flat shank for secure chuck grip, this short-series drill bit complies with DIN 338 RN standards. Its cobalt-alloyed steel construction ensures superior heat resistance and durability, making it an ideal choice for professional metalworking and industrial applications requiring precision and longevity.

## Long description

The ALPEN HSS Cobalt twist drill bit is a high-performance industrial tool engineered for precision drilling in demanding materials. With a diameter of 4mm and a total length of 75mm, this drill bit is manufactured from high-quality cobalt-alloyed steel, providing exceptional heat resistance and structural integrity during intensive use. The inclusion of a 3-flat shank ensures a secure, slip-free grip in standard drill chucks, enhancing stability and accuracy during operation.
Advantages
The primary advantage of this drill bit lies in its cobalt-alloyed composition, which significantly extends the tool's lifespan and maintains sharpness even when working with hardened materials. The 3-flat shank design prevents the bit from rotating within the chuck, allowing for safer and more efficient drilling. Furthermore, the short-series construction according to DIN 338 RN standards provides increased rigidity, reducing the risk of breakage and ensuring clean, precise holes in metal surfaces.
Suitable for
Drilling into stainless steel and acid-resistant steel
Working with alloyed and unalloyed cast iron
General metalworking and industrial fabrication
Precision drilling in hard steel alloys
When it may not be suitable
This drill bit is specifically optimized for metalworking and may not be the most efficient choice for drilling into soft materials like wood or plastics, where high-speed steel bits without cobalt content might be more cost-effective. It is also not intended for masonry or concrete applications, as the cutting geometry is not designed for impact or abrasive materials.
Key specifications
Diameter: 4mm
Total length: 75mm
Material: Cobalt-alloyed high-speed steel
Shank type: 3-flat shank
Standard: DIN 338 RN
How to use
To achieve the best results, ensure the drill bit is securely fastened in the chuck, aligning the flat surfaces of the shank with the chuck jaws. Begin drilling at a low speed with consistent, moderate pressure to allow the cobalt-alloyed edges to cut effectively without overheating. Using a suitable cutting oil or lubricant is highly recommended to dissipate heat and extend the life of the drill bit, especially when working with stainless steel.
What to consider before purchase
Verify the chuck capacity of your power tool to ensure compatibility with the 3-flat shank.
Assess the hardness of the material you intend to drill to ensure this cobalt bit is the correct tool for the task.
Consider purchasing a set if you require multiple sizes for varied metalworking projects.
Usage recommendations
Always wear appropriate eye protection and secure the workpiece firmly before starting the drilling process to prevent movement and ensure operator safety.

## FAQ

### How much does the ALPEN HSS Cobalt Twist Drill Bit 4x75mm cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 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 23.07.2026 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 ALPEN 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 ALPEN 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