Guhring 9007300070000 Screw Machine Drill Bit 7mm

Product Description

The GUHRING 9007300070000 is a stub-length (screw machine length) solid carbide drill bit designed for precision hole-making in production and maintenance environments. Measuring 7.00 mm (0.2756 inches) in diameter, it features a 118-degree faceted point and a regular spiral flute configuration with web thinning for improved chip evacuation and reduced thrust. The overall length is 74.00 mm with a 34.00 mm flute length, keeping the bit rigid and accurate in short-reach applications. Manufactured to DIN 6539 standards using micrograin carbide, this bit delivers consistent performance in general-purpose drilling operations where dimensional accuracy and tool life matter.

This drill bit is rated for aluminum as its primary workpiece material and suits general-purpose drilling in production shops, machine shops, and maintenance applications. The straight-cylindrical shank (7.00 mm diameter, h8 tolerance) seats directly in standard drill chucks and collet holders. The stub body length reduces deflection in drill press and CNC machining center setups, making it a common choice for repetitive short-depth holes. Maximum drilling depth is 0.925 inches (23.50 mm), consistent with its 3xD flute-to-diameter ratio. Right-hand cut, two-flute spiral design handles chip clearance efficiently in non-ferrous and softer materials.

Key Features

• Solid micrograin carbide construction for wear resistance and dimensional stability
• 118-degree faceted point with web thinning reduces entry thrust and improves centering
• Stub (screw machine) length body minimizes deflection in short-reach drilling
• DIN 6539 standard compliance ensures predictable fitment and dimensional accuracy
• Bright/uncoated finish suitable for aluminum and general-purpose non-ferrous drilling
• Straight-cylindrical shank with h8 tolerance for precise chuck or collet seating

Compatibility

Designed as a general-purpose stub-length carbide drill bit conforming to DIN 6539, suitable for use in standard drill chucks and collet systems accepting a 7.00 mm straight-cylindrical shank. Rated for aluminum as the primary workpiece material within the 0.2500 to 0.3000 inch (6.50 to 8.00 mm) drill bit size range.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician familiar with rotating cutting tool safety. Ensure the spindle is fully stopped and the machine is de-energized or locked out before changing tooling. Seat the shank fully and evenly in the chuck or collet and verify runout before commencing a cut. Do not exceed the maximum drilling depth of 0.925 inches per pass without retracting to clear chips.