GRAPHITE cobalt cylindrical drill bits 5 mm, 10 pcs

Name: Drill bit set GRAPHITE cobalt 57H032-10
Brand: GRAPHITE
SKU: 11719338
Price: 13.99 EUR
Availability: OutOfStock

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Drill bit set GRAPHITE cobalt cylindrical 5 mm, 10 pieces (57H032-10)

Short description

Cobalt cylindrical drill bit set by GRAPHITE, 10 pieces with 5 mm diameter each. Designed for drilling hard materials where increased heat and wear resistance is required; suitable for stainless steel, alloy steels and other demanding metals. Solid construction with cobalt alloy ensures durability and longer life in metalworking and maintenance tasks.

Warranty: 2 Years

SKU: 11719338

Manufacturer: GRAPHITE

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Product information

Description

GRAPHITE cobalt cylindrical drill bit set contains ten identical 5 mm diameter drill bits designed for reliable drilling of hard and demanding metals. The bits are made from a cobalt-containing high-speed steel alloy, which provides improved heat resistance and wear resistance compared with standard HSS. This set is suitable for metalworking and maintenance operations where precision, durability and consistent hole quality are required.

Advantages

The cobalt alloy construction increases cutting edge life and allows higher cutting temperatures without rapid loss of hardness, resulting in longer service life during repeated drilling in tough materials. Cylindrical shanks ensure stable clamping in standard chucks and reduce runout for accurate hole placement. The uniform 5 mm diameter across all ten pieces makes the set practical for repetitive tasks and reduces tool change time.

Suitable for

Drilling stainless steel and corrosion-resistant alloys
Working with alloy steels and hardened metals
Maintenance and repair tasks in workshops and industrial settings
Precision holemaking where consistent diameter is required

Key specifications

Material: cobalt-containing high-speed steel (HSS-Co)
Diameter: 5 mm
Shank type: cylindrical
Quantity: 10 pieces
Typical applications: metal drilling, maintenance, industrial use

How to use

Mount the cylindrical shank securely in a compatible drill chuck and ensure minimal runout before starting. Use cutting fluid or coolant when drilling stainless steel or other heat-sensitive alloys to reduce friction and chip welding. Start at low speed to establish the hole, then increase speed according to material recommendations for cobalt HSS bits, maintaining steady feed pressure to avoid breakage. Clear chips frequently to prevent clogging and overheating.

Usage recommendations

For best results, pre-drill pilot holes for large workpieces, clamp the workpiece securely, and match drill speed and coolant use to the specific metal being machined. Replace bits showing significant wear or chipping to preserve hole quality and operator safety.

Description

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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 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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