Hertel 66692096 Cobalt Screw Machine Drill Bit Size 33

Product Description

The HERTEL 66692096 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and abrasive materials. Sized at wire gauge 33 (0.1130 inches), it features a 135-degree split point that reduces walking on entry and lowers the thrust force needed to start a hole. A titanium nitride (TiN) coating increases surface hardness and extends tool life in production environments. The straight-cylindrical shank is compatible with standard drill chucks, and the web-thinned, parallel-web construction promotes efficient chip evacuation through the spiral flute. At 1-7/8 inches overall length, this stub-length bit provides added rigidity for precision work.

Screw machine length drill bits are a standard choice in machining, metalworking, and fabrication shops where rigidity and accuracy matter more than reach. This bit is suited for CNC drilling centers, drill presses, and hand-held power tools used by machinists, pipefitters, and mechanical contractors. The short flute length of 7/8 inch reduces deflection and chatter during drilling, making it a reliable option for repetitive, close-tolerance hole production in steel, stainless, and other ferrous alloys.

Key Features

• Cobalt construction provides heat and wear resistance for drilling hard metals
• TiN coating extends tool life and reduces friction during cutting
• 135-degree split point starts on contact without center punching
• Web-thinned parallel web promotes clean chip flow and reduced thrust
• Stub screw machine length adds rigidity and minimizes deflection
• Right-hand spiral flute for use with standard rotating equipment

Compatibility

Designed as a heavy-duty replacement or production-supply drill bit for wire gauge 33 applications in standard straight-shank drill chucks across drill presses, CNC machines, and hand-held drilling equipment.

Installation Notes

Installed by machinists, fabricators, and mechanical trades using standard keyed or keyless drill chucks rated for the shank diameter. Ensure the chuck jaws are clean and fully tightened before operation to prevent slippage. Use appropriate cutting fluid or coolant when drilling ferrous metals to manage heat buildup, noting this bit does not support coolant-through delivery. Inspect the cutting edges and TiN coating for wear or chipping between uses and replace when performance degrades to avoid oversize holes or tool breakage.