Drill bit Proline HSS-TiN 12.5 mm, model 5154576

Proline HSS-TiN 12.5 mm drill bit (model 5154576) is a high-speed steel bit with a titanium nitride coating designed primarily for drilling metal. The bit features a 135° point angle with adjustable chisel edge geometry and ground flutes that deliver precise holes and improved surface finish. Diameter: 12.5 mm; working length: 101 mm; overall length: 151 mm.

Advantages

The titanium nitride (TiN) coating increases wear resistance and extends tool life compared with uncoated HSS drills. The 135° point angle with slope adjustment reduces walking and improves centering on metal surfaces. Ground flutes ensure efficient chip evacuation and a cleaner hole finish suitable for workshop and construction tasks.

Suitable for

• Drilling steel and other metals
• Workshop and construction applications
• Use in handheld and bench drills
• General-purpose metal fabrication and maintenance

Key specifications

• Brand: Proline
• Model / MPN: 5154576
• EAN: 5903755154576
• Material: HSS (high-speed steel) with TiN coating
• Point angle: 135° with adjustable chisel edge
• Diameter: 12.5 mm
• Working length: 101 mm
• Overall length: 151 mm

How to use

Clamp the drill bit securely in the chuck of a handheld or bench drill. Mark and center-punch the drilling position to improve accuracy. Use cutting fluid or coolant when drilling metals to reduce heat and prolong the TiN coating life. Start at low speed to establish the hole, then increase speed as appropriate for the material and drill size. Apply steady, even pressure and clear chips from the hole periodically.

Usage recommendations

For best results when drilling metal, use appropriate cutting fluid, maintain moderate drilling speeds, and avoid excessive side load. Replace the bit when wear degrades cutting performance to prevent poor hole quality and increased torque on the drill.