Chicago-latrobe 48745 Screw Machine Drill Bit 0.082 in

Product Description

The CHICAGO-LATROBE 48745 is a screw machine length drill bit designed for high-productivity drilling in metalworking and machining applications. Manufactured from high speed steel (HSS) with a bright, uncoated finish, this bit features a 118-degree standard point angle and a regular spiral flute configuration for efficient chip evacuation. The straight-cylindrical shank provides secure chuck engagement. At 0.082 inches (Wire Size 45) in diameter, the 48745 is sized for precision hole-making in cast iron, non-ferrous metals, and steel. The stubby screw machine length body offers increased rigidity compared to jobber-length bits, reducing deflection in short-hole drilling operations.

This bit is suited for use in screw machines, drill presses, CNC machining centers, and manual lathes where short, rigid tooling is required. The 1-3/4 inch overall length and 3/4 inch flute length make it well-matched for shallow hole applications in production machining environments. Primary workpiece materials include cast iron, non-ferrous metals, and steel. General purpose grade construction makes this an everyday production drill for machine shops, maintenance departments, and fabrication operations.

Key Features

• High speed steel construction for durability across cast iron, non-ferrous metal, and steel workpieces
• 118-degree standard point angle with web-thinned, parallel web geometry for reduced thrust and easier starting
• Screw machine length body provides greater rigidity and reduced deflection versus jobber-length drills
• Right-hand cut, regular spiral flute for efficient chip removal
• Straight-cylindrical shank fits standard three-jaw drill chucks without modification
• Meets ISO standards; diameter tolerance held to +0.0000 to -0.0005 inches

Compatibility

Designed as a general purpose screw machine length drill bit for use in standard three-jaw chucks and collet systems accepting straight-cylindrical shanks. Compatible with primary workpiece materials including cast iron, non-ferrous metals, and steel per Series 157 specifications.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with drill press, lathe, or CNC tooling setup. Ensure the machine spindle is fully stopped and locked out before changing or inspecting tooling. Secure the shank fully in the chuck or collet and verify runout before drilling. Do not exceed the recommended feed and speed parameters for the workpiece material and drill diameter.