Hertel 84580851 No. 11 Hss Jobber Drill Bit 135 Deg

Product Description

The HERTEL 84580851 is a No. 11 wire-size jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Built from heavy-duty high speed steel with an oxide coating, it runs a 135-degree split point that reduces walking and requires less feed pressure at entry compared to a standard 118-degree point. The straight-cylindrical shank seats in standard three-jaw chucks without slipping. At 3.5 inches overall length with a 2-5/16-inch flute, this is a standard jobber geometry suitable for benchtop drill presses, hand drills, and CNC turrets running in right-hand rotation.

This drill bit is suited for production and maintenance applications where wire-gauge hole sizing is required. The 0.1910-inch diameter corresponds to a No. 11 wire gauge, commonly used in thread-tapping prep and clearance drilling in light fabrication, HVAC sheet metal, electrical enclosures, and plumbing fixture work. The two-flute spiral configuration with a tapered web and web-thinned tip promotes chip evacuation in interrupted and through-hole cuts. Coolant-through is not supported; external coolant or cutting fluid application is recommended for extended runs in ferrous material.

Key Features

• 135-degree split point reduces drill walk and lowers entry feed pressure
• Heavy-duty high speed steel construction for durability in ferrous and non-ferrous materials
• Oxide coating provides lubricity and basic corrosion resistance
• Web-thinned tapered web improves chip flow and reduces thrust load
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Right-hand, two-flute regular spiral geometry for general holemaking

Compatibility

Designed as a standard jobber-length drill bit with a straight-cylindrical shank; fits any three-jaw drill chuck or collet system accepting a 0.1910-inch shank diameter.

Installation Notes

Install in a properly tightened three-jaw chuck or matching collet before powering the drill or press. Ensure the workpiece is clamped securely before starting the cut. Apply cutting fluid or oil when drilling ferrous metals to extend tool life and manage heat. Inspect the cutting edges for wear or chipping before each use and replace if the split point shows rounding.