Hertel 16705113 Screw Machine Drill Bit 11mm Carbide

Product Description

The HERTEL 16705113 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. With an 11 mm (0.4331 inch) diameter and a 135-degree split-point angle, this bit starts on contact without walking, reducing the need for center punching. The bright/uncoated finish suits applications where coating buildup or contamination is a concern. At 3.375 inches overall length with a 2.375-inch flute length, this stub-length geometry increases rigidity and reduces deflection in short-hole applications. Machinists, tool-and-die workers, and maintenance technicians working on manual or CNC equipment are the primary users of this bit.

This drill bit is suited for drilling cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. The slow spiral flute design controls chip evacuation in tough, stringy, or work-hardening materials where faster spirals can cause chip packing or chatter. The straight cylindrical shank seats directly into standard drill chucks and collets without adapters. It is a practical choice for short, precise holes in production or maintenance settings where material hardness demands carbide over high-speed steel.

Key Features

• Solid carbide construction for superior hardness and heat resistance in ferrous and exotic alloys
• 135-degree point angle reduces thrust force and eliminates center-punch requirements on flat stock
• Slow spiral flute geometry improves chip control in stainless steel, titanium, and nickel alloys
• Screw machine (stub) length increases rigidity and minimizes deflection in short-hole drilling
• Bright/uncoated finish avoids coating interactions with reactive workpiece materials
• Right-hand cut with straight cylindrical shank for direct chuck or collet mounting

Compatibility

Designed as a screw machine length replacement drill bit for use in standard drill chucks and collets accepting straight cylindrical shanks in the 0.4000 to 0.4500 inch (11.00 to 13.50 mm) size range.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool selection and machine setup. Secure the shank fully in the chuck or collet and verify runout before drilling. When drilling stainless steel, titanium, or nickel alloy, use appropriate cutting fluid to manage heat and extend tool life. Never exceed the speed and feed parameters recommended for solid carbide tooling in the workpiece material being drilled.