Harvey Tool 37520-C3 Spotting Drill 5/16 in Solid Carbide

Product Description

The HARVEY TOOL 37520-C3 is a solid carbide spotting drill designed to create precise, accurately located starter points for follow-up drilling operations. Built to a 90-degree drill point angle, the tool seats cleanly against standard drill geometries, reducing wander and improving hole position accuracy. The AlTiN coating provides thermal resistance and extended tool life in harder workpiece materials. With a 0.3125-inch cutting diameter and an overall length of 2.5 inches, this is a compact, rigid tool suited for CNC machining centers and manual mills where controlled entry is critical. It features two spiral flutes and a straight cylindrical shank for straightforward toolholder compatibility.

This spotting drill is intended for general-purpose metal cutting applications on machining centers, knee mills, and drill presses where precise hole location is required before drilling, reaming, or tapping. The Harvey Type II point geometry and right-hand cutting direction make it appropriate for a wide range of common workpiece materials including steel, stainless, aluminum, and cast iron. It is a single-ended tool sold individually, suitable for both production and job-shop environments.

Key Features

• 90-degree drill point angle for accurate hole spotting and chamfering
• Solid carbide construction for rigidity and wear resistance
• AlTiN coating for thermal protection and extended tool life in ferrous and hard materials
• Harvey Type II point geometry for consistent entry performance
• Two spiral flutes with straight cylindrical shank for standard collet and toolholder compatibility
• Right-hand cut, single-ended design

Compatibility

Designed as a general-purpose spotting drill for use in standard straight-shank toolholders and collet chucks accepting a 5/16-inch shank diameter.

Installation Notes

Installation is performed by machining professionals using standard collet chucks or end mill holders rated for the shank diameter. Ensure the spindle is fully stopped and the machine is powered down before loading or removing the tool. Confirm runout at the shank before operation, as excessive runout will reduce spotting accuracy and shorten tool life. Follow the machine manufacturer and toolholder manufacturer torque guidelines when tightening the collet or set screw.