Guhring 9007300035700 Stub Drill Bit 0.1405in Carbide

Product Description

The GUHRING 9007300035700 is a stub-length (screw machine length) solid carbide twist drill bit designed for precision hole-making in aluminum and other general-purpose materials. Built to DIN 6539 standards, this bit features a 118-degree faceted point angle, a web-thinned tip for reduced thrust and cleaner entry, and a regular spiral flute geometry that promotes efficient chip evacuation. At 0.1405 inches (wire gauge #28) in diameter, it suits tight-tolerance drilling applications where dimensional accuracy is critical. The micrograin carbide construction provides rigidity and wear resistance suited to production and maintenance environments. Licensed tradespeople and machining professionals working with precision drilling equipment are the primary installers.

This drill bit is sized for wire gauge #28 applications and falls within the 0.1000 to 0.1500 inch diameter range of the GUHRING Series 730 stub drill family. Its short stub-length body reduces deflection in applications where depth of cut is limited or a rigid setup is required. Primary workpiece material is aluminum, though the general-purpose grade designation makes it usable across a range of non-ferrous and softer ferrous materials in light machining, repair, and fabrication work. The straight-cylindrical shank seats in standard drill chucks without special toolholding.

Key Features

• Solid micrograin carbide construction for wear resistance and rigidity
• 118-degree faceted point with web thinning for reduced entry thrust
• Regular spiral flute design promotes chip evacuation in through and blind holes
• Stub (screw machine) length minimizes deflection in short-reach setups
• Right-hand cut, 2-flute configuration suitable for general-purpose drilling
• Conforms to DIN 6539 standard; h8 diameter tolerance for close-fit hole work

Compatibility

Designed as a direct-fit replacement or production drill within the GUHRING Series 730 stub drill line, sized for wire gauge #28 (0.1405 inches) applications with a straight-cylindrical shank compatible with standard drill chucks and collet holders.

Installation Notes

This drill bit is intended for use in drill presses, CNC machining centers, or hand-held power drills operated by qualified machinists or maintenance tradespeople. Secure the straight-cylindrical shank fully in the chuck before operation and confirm runout is within acceptable limits before drilling. Carbide tooling is brittle — avoid side loading, interrupted cuts without proper setup, or use in machines with excessive spindle play. No coolant-through capability; apply external cutting fluid as appropriate for the workpiece material.