YATO HSS-Co Twist Drill Bit Set 10 pcs 1-10mm – YT-41603

The YATO YT-41603 CO-HSS Twist Drill Bit Set is a professional 10-piece cobalt drill set designed for precision drilling in hard metals and high-temperature applications. Manufactured from HSS-E Co (HS6-5-2-5) cobalt alloy steel, these drill bits offer exceptional durability, heat resistance, and cutting performance, making them ideal for demanding industrial, workshop, and MRO environments.

Engineered in accordance with DIN 338 and PN-EN ISO 4957:2002(U) standards, each drill bit features a 135° split point tip for accurate centering, reduced walking, and faster penetration. The precision-ground and polished surface improves chip evacuation and extends tool life, even when drilling tough materials.

Key Features

• Material: HSS-E Co (HS6-5-2-5) cobalt steel

• High temperature resistant – suitable for continuous heavy-duty use

• 135° split point for precise, self-centering drilling

• Tensile strength: >900 N/mm²

• Surface finish: Ground and polished

• Shank type: Cylindrical

• Standard: DIN 338

Set Includes (10 pcs)

Diameters: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 mm
Overall lengths: 34–133 mm
Working lengths: 12–87 mm

Applications

Suitable for drilling:

• Stainless steel

• Acid-resistant steel

• Alloy and structural steel

• Cast iron

• Non-ferrous metals

• Plastics

With excellent wear resistance and superior cutting stability, the YATO cobalt drill bit set is a reliable solution for professional metalworking, fabrication, automotive repair, and industrial maintenance applications.