Chicago-latrobe 48808 Screw Machine Drill Bit 0.266 in Hss

Product Description

The CHICAGO-LATROBE 48808 is a screw machine length drill bit designed for general-purpose drilling in metalworking applications. Built from high speed steel (HSS) with a bright, uncoated finish, it delivers reliable performance across a range of workpiece materials including cast iron, non-ferrous metals, and steel. The bit features a 118-degree standard point angle, a 2-flute spiral configuration with a web-thinned parallel web, and a straight-cylindrical shank. At 0.266 inches (17/64 inch, size H) in diameter with a diameter tolerance of +0.0000 to -0.0010 inches, it suits precision-critical production and maintenance drilling tasks. Machinists, tool-and-die techs, and general maintenance professionals are the primary users.

This bit is suited for screw machine work, general production drilling, and maintenance operations where a stub-length drill is preferred for rigidity and reduced deflection. The shortened flute length of 1.5 inches and overall length of 2-11/16 inches make it well-matched for use in drill presses, CNC turret lathes, screw machines, and hand-held power drills where reach is limited and control is critical. It performs in both ferrous and non-ferrous stock, making it a versatile choice for mixed-material shops. This is a single-piece package with no minimum order beyond one unit.

Key Features

• High speed steel construction for durability across cast iron, non-ferrous metal, and steel workpieces
• 118-degree standard point angle for general-purpose entry and chip clearance
• Web-thinned parallel web reduces thrust and improves penetration efficiency
• Bright uncoated finish suitable for use with standard cutting fluids
• Right-hand spiral flute design with 2 flutes for efficient chip evacuation
• Screw machine length body provides added rigidity and reduced runout compared to jobber-length bits

Compatibility

Designed as an OEM-style general-purpose screw machine drill bit compatible with standard straight-shank drill chucks across drill presses, CNC turret lathes, screw machines, and portable power drills accepting straight-cylindrical shanks.

Installation Notes

Install in a compatible straight-shank chuck and verify secure seating before operation. Ensure the drill press or machine spindle is fully stopped before inserting or removing the bit. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve hole finish. Follow shop safety protocols and applicable OSHA machine guarding requirements when operating drilling equipment.