Chicago-latrobe 48819 Screw Machine Drill Bit 0.348 in Hss

Product Description

The CHICAGO-LATROBE 48819 is a screw machine length drill bit designed for high-volume drilling in production and shop environments. Built from high speed steel (HSS) with a bright/uncoated finish, this bit measures 0.348 inches in diameter and delivers a 118-degree standard point angle suitable for general-purpose work in cast iron, non-ferrous metals, and steel. The shortened screw machine length reduces deflection and improves rigidity compared to jobber-length bits, making it a reliable choice for drill press and CNC turret work where precision and repeatability matter.

This drill bit is suited for machine shops, production facilities, and trade applications requiring consistent hole quality in metallic workpieces. The right-hand spiral flute configuration promotes efficient chip evacuation during through-hole and blind-hole drilling. The straight cylindrical shank fits standard drill chucks without adapters. Typical users include machinists, tool room technicians, and maintenance mechanics working on ferrous and non-ferrous stock.

Key Features

• Screw machine length body reduces deflection and improves accuracy in short-reach drilling applications
• 118-degree standard point angle with web-thinned tip for easier penetration and reduced thrust
• High speed steel construction rated for cast iron, non-ferrous metal, and steel workpieces
• Regular spiral flute with parallel web configuration promotes consistent chip flow
• Bright/uncoated finish suitable for use with cutting fluids or dry in general-purpose applications
• Diameter tolerance held to +0.0000 to -0.0010 inches for close-tolerance hole requirements

Compatibility

Designed as a general-purpose screw machine length drill bit in the CHICAGO-LATROBE Series 157 line, rated for primary workpiece materials including cast iron, non-ferrous metal, and steel. Fits any standard drill chuck accepting a straight cylindrical shank. ISO standards compliant.

Installation Notes

Installation and use should be performed by qualified machinists or mechanics familiar with drill press, turret, or CNC lathe operation. Secure the straight cylindrical shank firmly in the chuck before operation and verify chuck key removal prior to spindle engagement. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point shows deformation.