FANAR POGLEBIACZ DIN 335-C 90° x 12.4 mm HSSE TiCN countersink

FANAR POGLEBIACZ DIN 335-C 90° x 12.4 mm HSSE TiCN countersink is a precision cutting tool designed for creating 90° chamfers and deburring holes in metalworking operations. Manufactured in accordance with DIN 335-C geometry, this countersink has a 12.4 mm nominal diameter, a high-speed steel with cobalt (HSSE) substrate and a titanium carbonitride (TiCN) coating to improve wear resistance and extend tool life. It is intended for use in drilling and milling machines to produce clean screw seats and precise edge finishing on a variety of metals.

Advantages

The TiCN coating reduces friction and increases hardness at the cutting edge, improving wear resistance and maintaining cutting performance during repetitive operations. HSSE substrate provides better heat resistance and toughness compared to standard high-speed steel, allowing stable performance under higher cutting speeds and intermittent loads. The DIN 335-C geometry ensures consistent 90° chamfers and reliable centring in prepared holes, resulting in accurate screw seating and uniform deburring results.

Suitable for

• Deburring and edge chamfering of drilled holes in steel and non-ferrous metals
• Preparing 90° countersinks for screw heads and fasteners
• Use in drilling machines, milling machines and dedicated countersinking fixtures
• Short production runs and precision repair work requiring clean hole finishes

Key specifications

• Countersink angle: 90° according to DIN 335-C
• Nominal diameter: 12.4 mm
• Material: High-speed steel with cobalt (HSSE)
• Coating: Titanium carbonitride (TiCN) for improved wear resistance
• Intended use: Deburring and countersinking of metal workpieces
• Suitable mounting: Use in drill spindles, milling chucks or countersink holders

How to use

Select an appropriate spindle speed and feed rate for the workpiece material and secure the workpiece firmly. Mount the countersink in a suitable chuck or holder ensuring concentric runout is minimized. Bring the tool to the hole and apply light axial feed to establish the 90° chamfer; avoid excessive radial forces. Use cutting fluid where appropriate for the material being machined to improve finish and tool life. Inspect the chamfer and adjust depth or rpm as needed to achieve the required screw seat or deburred edge.

Usage recommendations

For best results, use moderate spindle speeds and steady feed when working with stainless steels or hard alloys, and consider increased speeds with lighter feeds for aluminum and softer non-ferrous metals. Regularly check the tool for wear and replace when edge rounding or increased burr formation is observed. Proper fixturing and coolant application will enhance surface finish and prolong the service life of the countersink.