Hertel 79891826 Solid Carbide Jobber Drill Bit No. 52

Product Description

The HERTEL 79891826 is a solid carbide jobber-length drill bit designed for precision drilling in demanding production and toolroom applications. Built to a No. 52 wire gauge size, it measures 0.0635 inches in diameter with an overall length of 1.5 inches and a flute length of 0.75 inches. The 118-degree standard point angle and web-thinned, tapered web geometry reduce entry force and improve chip evacuation. The bright finish leaves the carbide substrate exposed for maximum hardness and heat visibility during use. This bit is suited for machinists, tool and die makers, and CNC operators working with small-diameter holes in ferrous and non-ferrous materials.

This drill bit is appropriate for use in CNC machining centers, drill presses, and hand-held precision drilling equipment where tight-tolerance small-diameter holes are required. The straight cylindrical shank fits standard drill chucks and collets sized for 0.0635-inch shanks. The regular spiral flute geometry handles a range of materials common in light manufacturing, electronics assembly, and precision fabrication. It is sold individually and is suited for both production drilling and low-volume toolroom work.

Key Features

• Solid carbide construction rated Material Grade C2 for high-performance cutting applications
• No. 52 wire size, 0.0635 inches diameter with a tight tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle with web-thinned tapered web for reduced thrust and cleaner entry
• Regular spiral, 2-flute design promotes efficient chip clearance in small-diameter drilling
• Bright coating preserves carbide hardness and allows visual wear monitoring
• Straight cylindrical shank for compatibility with standard chucks and precision collets

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide jobber drill bit for applications requiring No. 52 wire gauge diameter, 0.0635-inch straight-shank tooling in standard drill chucks and collet systems.

Installation Notes

This drill bit is installed and operated by machinists, CNC technicians, and precision fabrication professionals. Secure the straight cylindrical shank fully in a properly sized collet or drill chuck before operation and verify runout before drilling production parts. Small-diameter carbide tooling is brittle — avoid side loading, interrupted cuts without appropriate feed reduction, and excessive hand pressure when used in manual equipment. Follow machine tool manufacturer guidelines for feed rate and spindle speed appropriate to the workpiece material and bit diameter.