# Drill bit GRAPHITE HSS cylindrical for metal 8.5 mm (55H030)

**URL:** https://aio.lv/en/product--graphite-55h030--11721568
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 55H030
**EAN:** 5902062997272
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-55h030--11721568

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Cylindrical HSS drill bit by GRAPHITE, diameter 8.5 mm, designed for drilling metal. High-speed steel construction ensures strength and wear resistance for general metalworking tasks. Suitable for use with drill presses and handheld drills for creating precise holes in steel, cast iron and non-ferrous metals in maintenance, fabrication and repair work.

## Long description

GRAPHITE cylindrical HSS drill bit with an 8.5 mm diameter is designed for drilling holes in metal. Made from high-speed steel, this drill bit provides the hardness and toughness required for general metalworking operations. It is suitable for use in both drill presses and handheld drills and is intended for creating precise through-holes and pilot holes in steel, cast iron and non-ferrous metals during maintenance, fabrication and repair tasks.
Advantages
The HSS material offers a balance of wear resistance and toughness that sustains cutting performance at moderate drilling speeds. The cylindrical shank ensures secure clamping in standard drill chucks and holders without requiring specialized adapters. The 8.5 mm diameter provides a commonly used size for fasteners and fittings, while the fluted geometry facilitates efficient chip evacuation and stable drilling action. The bit is produced to dimensional tolerances appropriate for routine metalworking, making it a reliable choice for repetitive drilling operations.
Suitable for
 Drilling holes in mild and stainless steel sheets and plates
 Fabrication and repair tasks on cast iron and non-ferrous metals
 Use with bench drill presses for precise hole alignment
 Handheld drilling for on-site maintenance and assembly
Key specifications
 Drill type: cylindrical straight shank twist drill for metal
 Material: high-speed steel (HSS)
 Diameter: 8.5 mm
 Shank style: cylindrical (straight) shank for standard chucks
 Application materials: steel, cast iron, non-ferrous metals
 Flute geometry: spiral flutes for chip removal
How to use
Secure the workpiece using a vise or clamps to prevent movement. Fit the drill bit into the chuck of a drill press or handheld drill, ensuring the shank is properly seated and tightened. Select an appropriate spindle speed for the metal being drilled—moderate speeds for harder steels and higher speeds for softer non-ferrous metals—using cutting fluid or lubricant to reduce heat and improve tool life. Apply steady, even feed pressure until the hole is complete, then withdraw the bit while the spindle is still turning to clear chips. Inspect the drilled hole and deburr edges as needed.
Usage recommendations
For prolonged tool life, use appropriate cutting fluid and avoid excessive feed rates or speeds that cause overheating. When drilling hardened or stainless steels, reduce speed and use light pecking cycles to clear chips and prevent work hardening. Always wear appropriate eye protection and follow workshop safety procedures when operating power tools.

## FAQ

### How much does the GRAPHITE HSS cylindrical drill bit 8.5 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 — 100 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 08.07.2026 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 GRAPHITE 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 GRAPHITE 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/11721568/67102760_large.webp