Drill bit Tvardy HSS for metal 12.00 mm (model T02120)

Tvardy HSS drill bit for metal, 12.00 mm diameter is a high-speed steel twist drill designed for accurate holemaking in a wide range of metal materials. The bit features a black-and-gold finish and a conventional two-flute geometry that suits both hand-held drills and drill presses. It is intended for workshop and industrial use where consistent hole size and tool durability are required.

Advantages

The high-speed steel construction provides a balance of hardness and toughness for drilling steel, iron and common metal alloys while resisting heat buildup during intermittent drilling. Its twist-flute design ensures reliable chip evacuation and steady cutting action. The 12.00 mm diameter offers a standard size for through-holes and pilot preparations, and the finished surface reduces friction for smoother penetration and prolonged cutting life.

Suitable for

• Drilling holes in mild and medium carbon steel
• Fabrication and repair tasks in workshops and maintenance shops
• Use with hand drills and drill presses for through-holes and clearance holes
• Preparing holes for tapping or fastening in metal components

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 12.00 mm
• Flute type: two-flute twist geometry
• Finish: black-and-gold coated appearance
• Intended materials: steel, iron and common metal alloys

How to use

Secure the workpiece and mark the drilling position accurately. Select appropriate clamping or vice support to prevent movement. Fit the 12.00 mm HSS drill bit into the drill chuck, ensuring it is centered and tightened. Start drilling at moderate speed suitable for the metal being worked; reduce speed for harder steels and increase cooling or peck-drilling as needed to control heat. Apply steady, even pressure and clear chips periodically to maintain cutting efficiency. After drilling, deburr edges to remove sharp burrs.

Usage recommendations

Use cutting fluid when drilling steel or alloyed metals to improve tool life and hole quality. Match drill speed to the specific metal: lower speeds for hardened or alloyed steels, higher speeds for soft metals. Inspect the bit for wear or chipping before use and replace when cutting performance deteriorates.