Drill bit Tvardy HSS for metal 11.50 mm (model T02115)

Tvardy HSS drill bit for metal, nominal diameter 11.50 mm, is designed for creating precise holes in a variety of metal workpieces. Manufactured from high-speed steel (HSS) with a black-and-gold finish, the bit offers increased wear resistance and heat tolerance expected from HSS tools. It is compatible with handheld drills and drill presses and intended for general metalworking, maintenance, repair and fabrication tasks where a reliably sharp cutting edge and dimensional accuracy are required.

Advantages

The HSS material provides good hardness and thermal stability during continuous drilling in ferrous and non-ferrous metals. The black-and-gold coating reduces friction and helps chip evacuation, extending tool life. A nominal diameter of 11.50 mm gives a standardized hole size for fittings and fasteners, while the geometry of the cutting tip supports centered starts and reduced walking on the work surface. The bit is suitable for use in both portable and stationary drilling equipment.

Suitable for

• Drilling through steel, stainless steel, cast iron and non-ferrous metals such as aluminum and brass
• Maintenance and repair work in workshops and on-site
• Fabrication and metal joining preparations for bolts, pins and dowels
• Use in handheld electric drills and drill presses

Key specifications

• Material: high-speed steel (HSS)
• Nominal diameter: 11.50 mm
• Finish: black-and-gold coating
• Intended use: metal drilling
• Compatible equipment: handheld drills and drill presses

How to use

Secure the workpiece firmly in a vise or with clamps to prevent movement. Select a suitable drill speed for the material being drilled—lower speeds for harder metals and higher speeds for softer metals—while applying steady, moderate feed pressure. If required, use cutting fluid to improve lubrication and cooling, which helps preserve the cutting edge and improves chip removal. Withdraw the bit periodically for chip clearing on deeper holes.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and gloves, and ensure the drill chuck is tightened correctly. Pre-center or use a pilot hole for greater accuracy on large diameter holes. Avoid excessive force and overheating; apply cutting fluid for improved life when drilling tougher alloys.