Guhring 9005520016100 Stub Drill Bit 0.0635 in Hss Wire 52

Product Description

The GUHRING 9005520016100 is a screw machine length (stub) drill bit designed for precision drilling in tight clearance applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this bit features a parabolic flute geometry and a 130-degree split point for aggressive chip evacuation and accurate hole entry. The straight-cylindrical shank seats securely in standard drill chucks. With an overall length of 1-11/32 inches and a flute length of 25/64 inches, this bit is sized for use in screw machines, CNC machining centers, and hand drilling operations. It is installed by machinists, tool and die technicians, and production floor operators working in high-volume drilling environments.

This drill bit is rated for primary use in aluminum and is suitable for short, controlled drilling cycles where rigidity and hole accuracy are critical. The parabolic flute design promotes fast chip clearing in soft and gummy materials. The Series 552 stub configuration limits deflection and walking, making it well-suited for work on fixtures, plates, and close-tolerance components where a longer drill would flex. The maximum drilling depth is 0.2990 inches, consistent with its 3xD flute-by-diameter ratio.

Key Features

• Wire size 52 (0.0635 inches diameter) for precise fractional and close-tolerance hole sizing
• Parabolic flute geometry promotes fast, clean chip evacuation in aluminum and similar materials
• 130-degree drill point angle reduces thrust force and improves self-centering on entry
• Web-thinned parallel web construction lowers cutting resistance
• Stub length (screw machine length) maximizes rigidity and minimizes deflection
• Conforms to DIN 1897 specification for dimensional consistency

Compatibility

Designed as an OEM-style screw machine length drill bit in GUHRING Series 552, conforming to DIN 1897 standards, and compatible with any standard drill chuck or collet accepting a straight-cylindrical shank at 0.0635 inches diameter.

Installation Notes

Installation and use by qualified machinists or tool operators is recommended. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. Coolant-through is not supported on this bit, so adequate surface-applied cutting fluid should be used when drilling aluminum or harder materials at high cycle rates. Inspect the cutting edges for wear regularly, as stub-length bits in high-production environments are subject to accelerated edge fatigue.