Internal Tool 71-1010 Combination Drill Countersink

Product Description

The INTERNAL TOOL 71-1010 is a solid carbide combination drill countersink designed for centering and drilling operations in a single tool. It carries a trade size of 1 with a body diameter of 0.1250 inches (1/8 inch) and a drill point diameter of 0.0460 inches (3/64 inch). The double-ended configuration extends tool life by providing two usable cutting ends. At an overall length of 2.0000 inches, this right-hand cutting tool suits precision work in machine shops and fabrication environments where accurate center drilling is required before follow-on drilling or turning operations.

This combination drill countersink is built for general-purpose centering and drilling across a broad range of workpiece materials. It performs on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The 60-degree included angle is consistent with standard center drill geometry used in lathe work, CNC setups, and drill press operations. Its plain cutting edge style and uncoated solid carbide construction make it a direct, no-frills choice for shops that prioritize tool rigidity and dimensional consistency in production or prototype work.

Key Features

• Solid carbide construction for high rigidity and wear resistance across hard and abrasive workpiece materials
• Double-ended design provides two cutting ends, reducing per-hole tooling cost
• 60-degree included angle matches standard countersink and center drill geometry
• Right-hand cutting direction compatible with standard spindle rotation
• Uncoated finish - no coating delamination risk when running at elevated feeds and speeds
• Rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium

Compatibility

Designed as a general-purpose replacement or production center drill for machine shop applications requiring trade size 1 combination drill countersink geometry in solid carbide.

Installation Notes

Installation and use of this tool is performed by qualified machinists or CNC setup technicians. Always secure the workpiece and tool holder firmly before spindle engagement. Power down and lock out the machine before changing or inspecting the tool. Inspect both cutting ends for chipping before use, as solid carbide is brittle and susceptible to edge damage if dropped or improperly stored.