Hertel 66693383 Jobber Drill Bit Wire Size 52 Hss

Product Description

The HERTEL 66693383 is a wire gauge size 52 jobber-length drill bit ground from high speed steel and coated with TiAlN for extended tool life in demanding holemaking applications. The 135-degree split point reduces walking on entry and lowers thrust force compared to conventional 118-degree geometry. A web-thinned, tapered web design supports clean chip evacuation through the spiral flute. At 1.875 inches overall length with a 0.875-inch flute length, this bit is sized for close-quarter drilling passes common in light fabrication and precision mechanical work. The straight-cylindrical shank at 0.0635 inches diameter seats directly in standard keyless or keyed chucks without a reduction sleeve.

This bit is suited for holemaking in metals, plastics, and composite materials where a small-diameter, high-precision hole is required. Wire gauge sizing makes it a standard choice for machinists, maintenance technicians, and precision fabricators working from NAS-specified engineering drawings. The TiAlN coating adds heat resistance that extends cutting performance in ferrous materials and at higher spindle speeds where uncoated HSS bits would degrade faster. It is a single-piece, right-hand cutting bit with a regular spiral and two flutes.

Key Features

• 135-degree split point reduces drill walk and cutting thrust on entry
• TiAlN coating improves heat resistance and extends tool life in ferrous and hard materials
• Web-thinned tapered web supports efficient chip evacuation through the spiral flute
• High speed steel construction rated for heavy-duty drill bit grade service
• Straight-cylindrical shank fits standard chucks without adapters
• NAS specification designation for use in precision and aerospace-adjacent applications

Compatibility

Designed as a jobber-series, wire gauge size 52 drill bit suitable for use in standard drill presses, CNC machining centers, and hand-held power drills equipped with chucks that accept a 0.0635-inch straight shank.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before beginning a cut. Power down the drill press or disconnect the tool from its power source before changing bits. Use appropriate cutting fluid or coolant for the material being drilled where the machine allows, even though this bit does not support through-coolant delivery. Wear ANSI-rated eye protection during all drilling operations.