EUROBOOR HSS-C0 S/STEEL BIT 4MM

What This Product Is and How It Works

The Euroboor HSS‑Co Stainless Steel Drill Bit 4 mm is a twist drill bit engineered from high‑speed steel with added cobalt (HSS‑Co, M35 quality). The cobalt alloy increases red hardness, wear resistance, and strength compared with standard HSS bits, enabling more aggressive penetration and longer tool life under elevated temperatures generated during drilling.

Spiral flutes evacuate chips while the drill rotates to form precise holes. The bit’s geometry—including a split point tip—helps reduce walking and improves centering without pre‑drilling in many metals.

Material Quality, Durability and Environmental Performance

HSS‑Co (cobalt alloyed high‑speed steel) delivers improved performance in high‑strength and abrasive metals such as stainless steel, cast and alloy steels, and high tensile materials. The presence of cobalt enhances hardness at temperature, making the bit resistant to wear and deformation compared with plain HSS bits. This alloy composition supports reliable drilling in demanding conditions.

Under typical Kenyan workshop and fabrication site conditions—including dust and moderate humidity—this bit performs reliably when paired with correct drilling speeds and feed rates for the material being drilled.

Installation, Handling and Compatibility

Install the 4 mm drill bit in a standard electric, cordless, or bench drill with a compatible chuck. Secure the bit fully in the chuck to prevent slippage. For metals like stainless steel or high‑strength alloys, centre‑punch the drilling point to help guide the bit and use appropriate cutting fluid to reduce heat and facilitate chip evacuation.

Operate at lower speeds for metals to manage heat and material work hardening; excessive speed can cause premature wear. Always use eye protection and other PPE when drilling metal.

Typical Applications in Kenya

This HSS‑Co drill bit is widely used in metal fabrication, maintenance, and mechanical projects. Typical applications include drilling holes for fasteners in stainless steel frames, brackets, sheet metal panels, structural assemblies, and machine components.

It is common among metalworkers, technicians, engineers, workshop personnel, and general tradespeople who require reliable performance in drilling hard metals. For related drilling accessories and bit sets, customers can browse the full range in our Shop or explore the Power Tool Accessories Category.

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4. TECHNICAL SPECIFICATIONS TABLE

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5. PRODUCT ATTRIBUTES (WooCommerce Ready)

Material: High‑speed steel with cobalt alloy (HSS‑Co)
Size / Dimensions: 4 mm diameter
Color: Specification varies by supplier batch
Finish: Specification varies by supplier batch
Application: Drilling metal, stainless steel, alloy steels
Brand: Euroboor
Unit of Sale: 1 drill bit
Country of Origin: Confirm on request

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6. PRODUCT CATEGORIES

Power Tool Accessories
Power Tool Accessories Category

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7. INTERNAL NAVIGATION LINKS

Browse more metalworking and drilling accessories in our Shop.
Learn more about Ngong Hills Merchants on the About Us page.
For specification clarification or stock enquiries, visit our Contact Us page.
Explore similar bits and accessories in the Power Tool Accessories Category.

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8. RELATED PRODUCTS

Related Products:

Total HSS Drill Bit 3 mm
Total HSS Drill Bit 6 mm
Euroboor Cobalt Drill Bit Set (1–13 mm)
UYUSTOOLS HSS Drill Bit 9 mm BCF09H