Chicago-latrobe 48426 Screw Machine Drill Bit 0.0465 in

Product Description

The CHICAGO-LATROBE 48426 is a screw machine length drill bit designed for precision drilling in cast iron and steel. It carries a wire gauge size of 56, which corresponds to a decimal diameter of 0.0465 inches. The bit is manufactured from high speed steel with a coating applied to extend cutting life. A 135-degree split point reduces walking at entry and lowers the thrust needed to start the hole. The shortened screw machine length body provides added rigidity compared to jobber-length bits, making it well suited for close-tolerance work on drill presses, CNC machines, and turret lathes. This is a production-grade, heavy-duty bit built to NAS 907 and ISO standards.

This bit is used in metal fabrication, machining, and production drilling applications where hole accuracy and tool life matter. The screw machine length format is common in shop environments where shorter stickout improves rigidity and reduces deflection in small-diameter holes. It is appropriate for both manual and CNC setups drilling cast iron and steel workpieces. The 2-flute regular spiral design handles chip evacuation efficiently in these materials. Machinists, tool-and-die workers, and maintenance technicians working in industrial and manufacturing settings are the primary users of this bit.

Key Features

• Wire size 56 diameter at 0.0465 inches for close-tolerance small-hole drilling
• 135-degree split point reduces entry thrust and minimizes bit walking
• Web-thinned, parallel web construction for improved chip clearance and lower cutting force
• High speed steel construction with coating for extended tool life in ferrous materials
• Screw machine length body adds rigidity over standard jobber-length bits
• Meets NAS 907 and ISO standards for dimensional and performance consistency

Compatibility

Designed as a production-grade screw machine length drill bit for use in cast iron and steel drilling applications. Compatible with standard straight-cylindrical shank drill chucks on drill presses, CNC lathes, turret machines, and hand-held power drills.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with rotating cutting tools. Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before operation and verify runout is within acceptable limits for the diameter. Apply appropriate cutting fluid or lubricant when drilling steel to reduce heat buildup and extend tool life. Never exceed the recommended RPM range for this diameter in the material being drilled.