Sgs 51339 Screw Machine Drill Bit 13/64 Solid Carbide

Product Description

The SGS 51339 is a screw machine length drill bit designed for high-performance drilling in demanding materials including alloy steels and titanium. Built from solid carbide and coated with Ti-NAMITE-A AlTiN finish, it delivers heat resistance and wear life well beyond standard high-speed steel tooling. The 145-degree notched point reduces thrust and improves self-centering at entry. With a 0.2031 inch (13/64 inch) diameter and a compact 2-5/8 inch overall length, this bit suits production drilling environments where rigidity and precision matter. Installation is performed by machinists and tool-and-die professionals in CNC and manual drill press setups.

This drill bit is intended for short-hole drilling applications in alloy steels and titanium where a stub-length tool improves rigidity and reduces deflection. The screw machine length format makes it a standard choice for production drilling, turret lathes, CNC machining centers, and bench drill presses. The straight shank fits standard drill chucks and collet holders sized for a 0.2500 inch shank. The 3xD flute-to-diameter ratio and regular spiral flute geometry support chip evacuation in a range of ferrous materials.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard and abrasive materials
• Ti-NAMITE-A AlTiN coating provides high-temperature oxidation resistance for dry and semi-dry cutting
• 145-degree notched point reduces entry thrust and improves hole location accuracy
• Web-thinned tapered web lowers cutting force and improves chip flow
• Straight shank with 0.2500 inch diameter fits standard chucks and collet systems
• Right-hand cut, 2-flute regular spiral design suits a broad range of ferrous workpiece materials

Compatibility

Designed for use in alloy steels and titanium; compatible with any standard drill chuck or collet holder accepting a 0.2500 inch straight shank. Part of the SGS Series 135 screw machine length carbide drill line. Diameter tolerance is +0.0002 to +0.0006 inches.

Installation Notes

This bit is installed by machinists in CNC machining centers, turret lathes, or manual drill presses. Ensure the machine spindle is fully stopped and the tool holder is secured before changing bits. Use appropriate cutting fluid or verify the tool coating is rated for dry cutting at your intended spindle speed and feed rate. Do not exceed the tool manufacturer recommended speeds and feeds for the workpiece material.