FAMAG’s long‑version twist drill bit is crafted from high‑performance high‑speed steel (HSS‑G) ground from a solid blank. Its extended length and special spiral geometry enable deep‑hole drilling in “smearing” materials while maintaining accuracy and tool life. Engineered for the most demanding industrial and trade applications, it delivers reliable performance in tough conditions.

🛠️ High‑Performance HSS‑G Construction

• Solid‑ground one‑piece design for maximum strength and wear resistance

• Diameter tolerance h8 ensures precise fits and consistent hole quality

• Withstands high torque and abrasive wear when drilling hardened steels and cast materials

📏 Length & Size

• OAL 150 mm / EL 100 mm – Compact for shallower holes

Covers common joinery and bespoke applications.

🎯 135° Split Point Precision

• DIN 1412C split‑point tip eliminates “walking” at startup

• 135° point angle reduces thrust and delivers clean entry without pilot holes

• Ensures accurate hole placement and burr‑free openings in dense metals

🚀 Special Spiral for Optimal Chip Removal

• Deep, polished flutes evacuate chips rapidly, preventing clogging in long bores

• Tailored helix angle manages swarf flow in smearing materials like ductile cast iron

• Keeps cutting edges cool and sharp during continuous drilling

🌲 Versatile Material Compatibility

Ideal for demanding drilling in:

• Alloyed & unalloyed steels up to 900 N/mm²

• Grey, malleable, and ductile cast irons

• Sintered iron, nickel silver, graphite, and other challenging substrates

⚠️ Safety & Maintenance

• Always clamp workpieces securely and wear protective eyewear

• Maintain proper speed and feed rates to minimize heat buildup

• Clear chips regularly and inspect the split point for wear—regrind or replace when necessary to sustain peak performance