Guhring 9024630070300 Screw Machine Drill Bit 0.277in Carbide

Product Description

The GUHRING 9024630070300 is a stub-length (screw machine length) solid carbide drill bit sized at 0.277 inches (Letter J) with a 118-degree faceted point angle. It features a regular spiral flute, right-hand cut, and a straight-cylindrical shank. The web-thinned geometry reduces thrust during entry and improves chip evacuation. With an overall length of 2.913 inches and a flute length of 1.339 inches, this bit is built for compact, rigid setups where a standard-length drill would flex or chatter. It is installed by machinists, tool-and-die professionals, and maintenance technicians working in precision drilling applications.

This drill bit is rated for general-purpose use with a primary workpiece material of aluminum, though its solid carbide K40 grade construction handles a range of non-ferrous and ferrous materials in short-hole drilling applications. The stub flute-to-diameter ratio of 3xD and a maximum drilling depth of 0.924 inches make it well suited for CNC machining centers, drill presses, and screw machine setups where hole location accuracy and rigidity are critical. It conforms to DIN 6539 standards and carries the Series 2463 designation.

Key Features

• Solid carbide K40 grade construction for rigidity and wear resistance
• 118-degree faceted point with web thinning to reduce entry thrust
• Right-hand cut, regular spiral flute for controlled chip removal
• Stub length (3xD flute ratio) for improved stability in tight setups
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Meets DIN 6539 specification; diameter tolerance of +0.000 to -0.010 mm

Compatibility

Designed as a DIN 6539 Series 2463 stub-length carbide drill bit for use in CNC machining centers, drill presses, and screw machines that accept a straight-cylindrical shank of 7.03 mm (0.277 inches) diameter. Primary workpiece material is aluminum; general-purpose coating supports broader application use.

Installation Notes

This drill bit should be installed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet runout is within acceptable tolerance before use, as excessive runout accelerates carbide wear and risks bit breakage. Do not use coolant-through setups with this bit, as it is not rated for through-tool coolant.