Drill bit FANAR 4.00 mm solid carbide 3xD H6 VHM X-DRILL DIN 6537

Solid carbide drill bit FANAR 4.00 mm with X-DRILL geometry is produced to DIN 6537 standards for precision metalworking. The tool features a flute length equal to three times the nominal diameter (3xD) and is manufactured from cemented carbide (VHM) with H6 tolerance for diametral accuracy. Designed for repeatable and accurate holemaking, this drill bit is suitable for use in production drilling and CNC machining where consistent hole quality and tool life are important.

Advantages

The FANAR 4.00 mm solid carbide drill combines rigid carbide construction with an optimized X-DRILL geometry to provide stable cutting performance, good concentricity and reliable chip evacuation for small- to medium-depth holes. H6 tolerance ensures high dimensional accuracy, while the 3xD flute length balances reach and rigidity. Its construction and geometry reduce vibration and support predictable tool wear in serial production environments.

Suitable for

• Precision drilling in steel, stainless steel and non-ferrous metals
• CNC machining centres and production drilling operations
• Applications requiring tight diameter tolerance and repeatable hole position
• Drilling of through-holes and shallow blind holes up to 3x diameter

Key specifications

• Diameter: 4.00 mm
• Material: solid cemented carbide (VHM)
• Flute length: 3 x diameter (3xD)
• Tolerance: H6 (high dimensional accuracy)
• Geometry: X-DRILL for improved centring and chip control
• Standard: manufactured to DIN 6537 dimensional guidelines

How to use

Mount the drill in a rigid, high-precision collet or tool holder to preserve concentricity and H6 accuracy. Select cutting parameters appropriate for the workpiece material: use moderate cutting speeds and feed rates for steel and higher speeds for non-ferrous metals while ensuring adequate coolant or lubrication for chip evacuation. Apply steady axial feed without interruption; retract periodically if long chips form to clear flutes. Inspect hole diameter and surface finish during setup cuts to confirm correct speed, feed and coolant settings.

Usage recommendations

Use a coolant or suitable cutting fluid when drilling steels and stainless steels to extend tool life. For best results in production, perform a trial run to optimise spindle speed and feed per revolution, and replace the tool at first signs of reduced hole quality or increased burr formation.