Chicago-latrobe 48823 Screw Machine Drill Bit W Hss

Product Description

The CHICAGO-LATROBE 48823 is a screw machine length drill bit designed for high-productivity drilling in metalworking and industrial applications. Manufactured from high speed steel with a bright uncoated finish, this bit carries a 118-degree standard point angle and a two-flute spiral configuration that promotes efficient chip evacuation. The straight cylindrical shank seats securely in standard drill chucks, and the web-thinned point reduces thrust requirements at entry. At 3.25 inches overall length with a 1.875-inch flute length, the screw machine format is optimized for close-clearance work in turret lathes, screw machines, and CNC production drilling setups.

This bit is suited for general-purpose production drilling in cast iron, non-ferrous metals, and steel. The shorter-than-jobber body length improves rigidity and reduces deflection when drilling at high feed rates or in short-stroke machine setups. Machinists, toolroom technicians, and production line operators working with automatic screw machines or turret lathes will find the Series 157 format a standard fit for those operations. Right-hand cutting direction is standard for conventional drill press and machine tool spindle rotation.

Key Features

• Letter W size: 0.386 inches diameter with a tolerance of +0.0000 to -0.0010 inches
• High speed steel construction for general-purpose metal drilling
• 118-degree standard point angle with web-thinned, parallel web configuration
• Bright uncoated finish — no coating buildup to affect hole tolerance
• Screw machine length body improves rigidity over standard jobber length
• ISO standard compliance; Series 157 designation

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard straight-shank drill chucks used in turret lathes, automatic screw machines, drill presses, and CNC machining centers. Primary workpiece materials include cast iron, non-ferrous metals, and steel.

Installation Notes

Install in a properly sized drill chuck or collet and torque the chuck key evenly before running the spindle. Power down and lock out the machine before changing bits. Verify spindle speed is appropriate for the workpiece material and bit diameter before engaging the feed. Confirm the chuck bore is free of chips and burrs to maintain accurate bit seating and prevent runout.