Precision Twist Drill 5997975 Jobber Drill Bit 38

Product Description

The PRECISION TWIST DRILL 5997975 is a wire gauge size 38 jobber length drill bit ground from high speed steel with a bright uncoated finish. It measures 2.5 inches in overall length with a 1-7/16 inch spiral flute and a straight cylindrical shank diameter of 0.1015 inches. The 118-degree standard point angle and web-thinned, tapered web construction promote accurate entry and reduce thrust when drilling into steel, cast iron, non-ferrous metals, and superalloys including titanium. The regular spiral and two-flute design evacuate chips efficiently during general-purpose production drilling. Licensed tradespeople and machining professionals use this bit in hand-held and bench-mounted drilling operations.

This bit is suited for general-purpose drilling in ferrous and non-ferrous workpiece materials, including steel, cast iron, non-ferrous metals, and superalloys and titanium. The 14xD flute-to-diameter ratio and 1-7/16 inch maximum drilling depth make it a practical choice for through-hole and blind-hole work on light-gauge stock. It conforms to ANSI specifications and fits into the R10H-R18H series lineup. Typical applications include maintenance, repair, fabrication, and light production work where a standard jobber length provides adequate reach without sacrificing rigidity.

Key Features

• Wire gauge size 38 (0.1015 inches decimal) with 118-degree standard point for accurate starting
• High speed steel construction rated for steel, cast iron, non-ferrous metals, and superalloys including titanium
• Bright uncoated finish suitable for general-purpose use across a broad range of workpiece materials
• Web-thinned tapered web reduces thrust and improves chip clearance at the cutting tip
• Two-flute regular spiral design promotes efficient chip evacuation in jobber-length drilling
• ANSI-compliant straight cylindrical shank fits standard drill chucks without modification

Compatibility

Designed as an OEM-style general-purpose jobber length drill bit compatible with standard drill chucks accepting a 0.1015-inch straight cylindrical shank. Part of the PRECISION TWIST DRILL R10H-R18H series.

Installation Notes

Installation of this drill bit is performed by machinists, maintenance technicians, and trade professionals using standard drill presses, CNC machines, or hand-held power drills. Ensure the drill chuck is fully tightened and the workpiece is properly secured before beginning any drilling operation. This bit does not support coolant-through delivery; apply cutting fluid externally when drilling hard or abrasive materials to extend tool life. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.