# KWB 209640 HSS Twist Drill Bit 4 mm, DIN 338, Cylindrical Shank

**URL:** https://aio.lv/en/product--kwb-209640--10811258
**Data updated:** 2026-06-02 20:10 (EEST)
**Category:** Home Goods Accessories
**Manufacturer:** KWB
**Manufacturer code:** 209640
**EAN:** 4009312096400
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The KWB 209640 is a high-quality HSS twist drill bit designed for precise drilling applications. Featuring a 4 mm diameter and a standard cylindrical shank, it complies with DIN 338 specifications. This right-hand rotation drill bit is suitable for various materials, offering durability and efficient chip removal. Ideal for professional and DIY projects requiring reliable performance and accuracy.

## Long description

The KWB 209640 HSS twist drill bit is a precision-engineered tool designed for reliable performance in various drilling applications. With a diameter of 4 mm and a total length of 75 mm, this drill bit is manufactured according to DIN 338 standards, ensuring compatibility with standard drill chucks via its cylindrical shank. The tool features a robust roll-forged construction and a steam-hardened surface, which enhances its durability and resistance to wear during intensive use.
Advantages
This drill bit offers exceptional stability and efficiency due to its type N geometry and 118-degree tip angle, which facilitates effective centering and rapid material penetration. The steam-hardened, blue-black finish provides improved heat resistance and chip removal, extending the service life of the tool even when working with tougher materials. Its right-hand cutting design ensures smooth operation and consistent hole quality across a wide range of metal and plastic substrates.
Suitable for
Drilling into alloyed and mild steel
Working with cast iron materials
Processing non-ferrous metals
Drilling into hard plastics
When it may not be suitable
This drill bit is not intended for use on hardened steel, stainless steel alloys, or masonry and concrete surfaces, as these materials require specialized carbide-tipped or cobalt-alloyed bits. Using this HSS bit on such materials may lead to rapid dulling or breakage.
Key specifications
Diameter: 4 mm
Total length: 75 mm
Material: High-speed steel (HSS)
Standard: DIN 338
Tip angle: 118 degrees
Shank type: Cylindrical
Cutting direction: Right-hand
How to use
Insert the drill bit into the chuck of your power drill or drill press, ensuring it is tightened securely. Align the tip of the bit with the marked center point of your workpiece. Apply steady, moderate pressure while maintaining a consistent rotation speed appropriate for the material being drilled. It is recommended to use a cutting oil when drilling into metals to reduce friction, prevent overheating, and improve the finish of the hole.
What to consider before purchase
Verify that your drill chuck supports a 4 mm cylindrical shank.
Ensure the material you intend to drill is compatible with standard HSS bits.
Consider using a center punch to mark the drilling location for higher precision.
Usage recommendations
Always wear appropriate eye protection and secure the workpiece with clamps before starting the drilling process to ensure safety and accuracy.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Black |
| Proper use | Drill |
| Rotating direction | Right hand rotation |
| Suitable for materials | Metal, Non-ferrous metal, Plastic, Profile, Sheet metal |
| Drill bit diameter | 4 mm |
| Point angle | 118 ° |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### What payment options are available?

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### 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 KWB 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 KWB 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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