Hertel 85707768 Jobber Drill Bit Size 52 Hss Tin

Product Description

The HERTEL 85707768 is a jobber-length drill bit designed for general-purpose metal drilling applications. It is ground from high speed steel and coated with titanium nitride (TiN) to extend cutting edge life and reduce friction during operation. The bit is sized to wire gauge 52, which equals 0.0635 inches in decimal, and features a 118-degree standard point angle with a web-thinned, tapered web configuration. Overall length is 1.875 inches, with a flute length of 0.875 inches. The straight-cylindrical shank matches the 0.0635-inch drill diameter, making it compatible with standard keyless and keyed drill chucks. Installation and use are handled by machinists, tool-and-die workers, maintenance technicians, and general fabricators.

This bit is suited for through-hole and blind-hole drilling in light metals, plastics, and similar materials where a small-diameter, precise entry hole is required. The regular spiral, two-flute geometry promotes efficient chip evacuation in short-depth holes typical of wire-gauge-size drilling. It is a per-piece item with a minimum order quantity of 12 units, making it appropriate for shop stocking or production line supply. No coolant-through capability is present, so conventional external cutting fluid or dry cutting applies depending on material.

Key Features

• Wire gauge size 52 — 0.0635 inches decimal diameter for precision small-hole work
• TiN coating reduces friction and extends cutting edge service life compared to uncoated HSS
• 118-degree standard point angle for general-purpose entry into metals and plastics
• Web-thinned, tapered web reduces thrust force required at drill entry
• Right-hand cut, regular spiral, two-flute design promotes clean chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill presses, CNC machining centers, and hand-held power drills equipped with chucks accepting a 0.0635-inch straight shank.

Installation Notes

Always secure the workpiece with appropriate clamping before drilling. Ensure the drill chuck is fully tightened and the machine is set to a spindle speed appropriate for the material and bit diameter — smaller-diameter bits typically require higher RPM. Do not force the bit through hard materials; use a center punch to locate the hole and apply light, steady feed pressure to avoid bit breakage at this diameter. Apply cutting fluid when drilling metals unless dry cutting is specified for the material.