Guhring 9005520065300 Screw Machine Drill Bit Hss

Product Description

The GUHRING 9005520065300 is a stub-length screw machine drill bit designed for high-performance drilling in production and machining environments. Built from high speed steel with a bright/uncoated finish, this bit features a parabolic flute geometry that promotes efficient chip evacuation and reduces cutting resistance. The 130-degree split point with web thinning allows for fast penetration and reduced thrust force. At 0.2571 inches in diameter with an overall length of 2-3/4 inches and a flute length of 1-7/32 inches, this bit fits standard drill chucks and CNC spindles alike. It is sized to letter size F and conforms to DIN 1897 standards.

This drill bit is suited for drilling aluminum and other non-ferrous materials in screw machine, lathe, or CNC drilling operations. The parabolic flute profile with a 3xD flute-to-diameter ratio supports fast chip removal during shorter-depth drilling cycles. The straight cylindrical shank at 0.2571 inches diameter provides secure, concentric seating in standard collet chucks or drill press chucks. Maximum drilling depth is 0.835 inches, making this bit appropriate for shallow through-holes and blind holes in production-volume applications. It is sold individually.

Key Features

• Parabolic flute geometry promotes efficient chip evacuation and reduces heat buildup during cutting
• 130-degree point angle with web thinning reduces entry thrust and improves centering
• High speed steel construction provides durability across a range of drilling speeds
• Straight cylindrical shank at 0.2571 inches fits standard collets and drill chucks without adapters
• DIN 1897 stub-length specification ensures consistent dimensional compliance for production tooling
• Bright/uncoated finish allows visual wear inspection without coating interference

Compatibility

Designed as an OEM-style replacement or production tooling option for screw machines, CNC lathes, and drill presses requiring a letter-size F, straight-shank stub drill bit conforming to DIN 1897. Primary workpiece material designation is aluminum per manufacturer specification.

Installation Notes

Installation of this drill bit should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the collet or chuck is de-energized before inserting or removing the bit. Verify shank seating depth meets machine tool manufacturer requirements to prevent runout. Do not exceed the rated maximum drilling depth of 0.835 inches per pass without retracting to clear chips.