Chicago-latrobe 42722 Wire Size 52 Hss Tialn Drill Bit

Product Description

The CHICAGO-LATROBE 42722 is a jobber length drill bit designed for high-performance drilling in titanium and other demanding workpiece materials. Built from high speed steel with a TiAlN coating, this bit handles elevated cutting temperatures and extends tool life compared to uncoated alternatives. It measures 0.0635 inches in diameter (wire size 52) with a 135-degree split point that reduces walking on entry and lowers thrust requirements. Overall length is 1-7/8 inches with a 7/8-inch flute length. The straight-cylindrical shank seats securely in standard drill chucks, and the two-flute spiral design promotes efficient chip evacuation during the cut. This bit is graded heavy duty and meets NAS 907 Type B standards.

The 42722 is suited for precision drilling in titanium, aerospace alloys, and similarly hard or abrasive materials where a standard-grade bit would dull prematurely. Its compact jobber length makes it appropriate for close-tolerance work in machining centers, drill presses, and hand-held drill motors. Machinists, aerospace maintenance technicians, and precision fabricators working to NAS specifications are the primary users. The web-thinned, tapered-web geometry reduces cutting resistance, which is especially useful when drilling small-diameter holes in tough stock without coolant-through assistance.

Key Features

• TiAlN coating extends tool life in high-temperature cutting applications including titanium
• 135-degree split point reduces drill walk and lowers required thrust at entry
• Web-thinned, tapered-web construction reduces cutting resistance in hard materials
• Two-flute regular spiral promotes clean chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets NAS 907 Type B specification for aerospace-grade dimensional and performance standards

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for applications requiring NAS 907 Type B compliance in wire size 52 (0.0635 inch diameter). Compatible with any standard drill chuck accepting a straight-cylindrical shank of 1.0000 inch shank length.

Installation Notes

Installation of this bit is performed by machinists or maintenance technicians using a keyed or keyless drill chuck on a drill press, CNC machining center, or hand-held drill motor. Confirm the chuck is fully tightened and the shank is seated before initiating the cut. Because this bit is not coolant-through capable, use appropriate external cutting fluid or mist when drilling titanium or similarly hard materials to manage heat buildup. Inspect the cutting edges before each use and replace the bit if the TiAlN coating shows visible wear or chipping.