FANAR drill bit POGLEBIACZ DIN 335-C 20.5 HSSE TiN

FANAR POGLEBIACZ DIN 335-C 20.5 HSSE TiN is a 20.5 mm solid countersink and spot-drilling tool manufactured to DIN 335-C dimensions. Made from high-speed steel with cobalt (HSSE) and finished with a titanium nitride (TiN) coating, this cutting tool is designed to provide consistent geometry and improved wear resistance for precision metalworking tasks. It is intended for preparing hole entrances, creating chamfers, and providing accurate seats prior to threading or larger drilling operations.

Advantages

The HSSE substrate with cobalt enhances toughness and heat resistance compared with standard high-speed steel, while the TiN coating reduces friction and extends tool life in repetitive metal cutting operations. Manufactured to DIN 335-C dimensions, the tool delivers predictable chamfer angles and concentricity, enabling reliable preparation of holes and improved fit for fasteners or subsequent tooling. Its solid construction ensures rigidity and stability during countersinking and spot-drilling.

Suitable for

• Preparing hole entrances and countersinks before threading
• Spot-drilling to provide accurate drill starts
• Creating chamfers for fastener seating and deburring
• Precision metalworking on steels and alloyed materials

Key specifications

• Nominal diameter: 20.5 mm
• Material: high-speed steel with cobalt (HSSE)
• Coating: titanium nitride (TiN)
• Standard: DIN 335-C geometry
• Tool type: solid countersink / spot drill

How to use

Mount the countersink securely in a suitable drill chuck or tool holder ensuring concentric alignment. Use appropriate spindle speeds and feed rates for the workpiece material; slower speeds and steady feed are recommended for harder alloys. Position the tool at the intended hole entrance and apply steady axial pressure until the required chamfer or spot-drill depth is achieved. Retract the tool and inspect the seat or pilot before proceeding to threading or larger drilling.

Usage recommendations

Select cutting parameters (speed and feed) based on the workpiece material and hardness; use coolant or cutting fluid when machining steels to reduce heat build-up and extend tool life. Inspect the tool periodically for wear on the TiN coating and cutting edges, and replace when performance degrades to maintain hole quality and dimensional accuracy.