# Twist Drill Bit Bosch HSS Cobalt 5.1 mm – single piece

**URL:** https://aio.lv/en/product--bosch-2608585852--11719881
**Data updated:** 2026-03-08 11:22 (EET)
**Category:** Drill Bits
**Manufacturer:** Bosch
**Manufacturer code:** 2608585852
**EAN:** 3165140520874
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bosch-2608585852--11719881

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Bosch HSS Twist Drill Bit Cobalt is a single 5.1 mm high-speed steel twist drill with cobalt alloy for improved heat resistance and wear life. Designed for drilling with drills and rotary hammers where a twist drill bit is required. Suitable for metalworking, machining and general-purpose drilling tasks requiring durable, precision holes.

## Long description

Bosch HSS Cobalt twist drill bit 5.1 mm is a single high-speed steel drill with added cobalt alloy designed for demanding metalworking tasks. Manufactured to DIN 338 with a Type N flute geometry and a 135° split-point tip, this drill bit delivers precise centring and reduced wandering for accurate holes. The fully ground HSS body and cobalt content improve heat resistance and wear life, making the 5.1 mm bit suitable for drilling a range of ferrous materials including stainless and alloyed steels. The cylindrical shank equals the drill diameter and is compatible with three-jaw chucks, intended for use in hand-held drill drivers and drill stands.
Advantages
The cobalt alloy and fully ground HSS construction provide enhanced wear resistance and higher temperature tolerance compared with standard HSS bits. The 135° split-point tip ensures active cutting and self-centering to reduce walking at the start of a hole. Two cutters and two flutes enable efficient chip removal, which helps maintain cutting performance and extends the tool life. Diameter tolerance h8 and precision manufacturing give consistent hole sizes suitable for machining and assembly work.
Suitable for
 Drilling stainless steel and acid- or heat-resistant steels
 General metalworking and machining operations
 Creating precision holes in non-alloyed and alloyed steels
 Use in drill stands and hand-held drill drivers with three-jaw chucks
Key specifications
 Drill type: Twist drill bit, fully ground
 Material: High-speed steel (HSS) with cobalt alloy
 Tip angle: 135° split-point for reduced walking
 Flute type: Two cutters and two flutes for rapid chip evacuation
 Standard: Manufactured to DIN 338
 Diameter: 5.1 mm
 Overall length: 86 mm
 Shank: Cylindrical shank equal to drill diameter (suitable for three-jaw chucks)
 Diameter tolerance: h8 for precision holes
 Pack quantity: 1 piece
How to use
Secure the Bosch HSS Cobalt 5.1 mm bit in a three-jaw chuck or appropriate drill holder, ensuring the shank is clamped firmly. Select a suitable cutting speed and feed for the material being drilled; lower speeds and steady feed are recommended for stainless and high-alloy steels to avoid overheating. Use cutting fluid or coolant when drilling tougher steels to improve chip evacuation and extend tool life. Start drilling with light pressure to allow the split-point tip to self-center, then apply consistent feed until the hole is completed. After use, clean chips from the flutes and store the bit dry to prevent corrosion.
Usage recommendations
For best performance when drilling stainless steel and high-alloy materials, use a reduced spindle speed, steady feed, and appropriate coolant. Avoid excessive pressure and high speeds which increase heat and wear. Match drill speed and coolant choice to the workpiece material for longer service life and consistent hole quality.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Bronze |
| Length | 86 mm |
| Proper use | Rotary hammer, Drill |
| Working length | 52 mm |
| Suitable for materials | Cast steel, Steel, Stainless steel, Non-alloyed steel, Metal, Cast iron |
| Drill bit diameter | 5.1 mm |
| Shank shape | Cylindrical shank |
| DIN compliance | 338 |
| Drill bit material | Cobalt Alloy High-Speed Steel (HSS-Co) |
| Number of drill bits | 1 pc(s) |
| Number of cutting edges | 2 |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Bosch HSS Cobalt Twist Drill Bit 5.1 mm cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 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 21.07.2026 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 Bosch 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 Bosch 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/11719881/67194595_large.webp