Precision Twist Drill 5997788 Wire 48 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5997788 is a jobber-length twist drill bit sized to wire gauge 48, with a decimal diameter of 0.0760 inches and an overall length of 2 inches. The bit is manufactured from high speed steel with a steam oxide coating that reduces friction and helps resist corrosion during cutting operations. A 135-degree split point promotes accurate starting without center-punching and reduces walking on hard surfaces. The two-flute, right-hand spiral design with a regular helix provides efficient chip evacuation in deep holes. Web thinning on the point reduces feed pressure. This bit is a general-purpose, heavy-duty tool suited for metalworking and precision drilling applications performed by machinists and maintenance technicians.

This drill bit is designed for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. With a 1-inch flute length and a maximum recommended drilling depth of 1 inch, it is well-suited for through-hole and short blind-hole work in production, toolroom, and maintenance environments. The straight-cylindrical shank fits standard drill chucks without modification. It conforms to ANSI standards and meets NAS 907 specification requirements, making it appropriate for aerospace and precision manufacturing workflows.

Key Features

• Wire gauge 48 diameter (0.0760 inches) for precision small-hole drilling
• 135-degree standard split point reduces walking and improves hole location accuracy
• Steam oxide coating reduces friction and provides light corrosion resistance
• High speed steel construction rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Web-thinned, tapered web design lowers required feed force
• Meets ANSI standards and NAS 907 specification; Series R10B-R15B-R18B

Compatibility

Designed as an OEM-style jobber-length drill bit for use in standard keyed or keyless drill chucks accepting a 0.0760-inch straight-cylindrical shank across a broad range of benchtop drill presses, CNC drilling centers, and hand-held drill drivers.

Installation Notes

Installation is performed by machinists, tool-and-die technicians, or maintenance professionals. Secure the shank fully in the drill chuck and verify concentricity before drilling. Always wear appropriate eye protection and ensure the workpiece is clamped before beginning drilling operations. Do not exceed the recommended drilling depth of 1 inch without retracting the bit to clear chips.