Guhring 9006590039700 5/32 in Cobalt Stub Drill Bit

Product Description

The GUHRING 9006590039700 is a cobalt screw machine length drill bit designed for high-performance drilling in demanding materials. Built to DIN 1897 standards, this heavy-duty stub-length bit measures 5/32 inch (0.1562 inches) in diameter with an overall length of 2.1654 inches. The 130-degree split point and parabolic flute geometry reduce thrust and improve chip evacuation, making this bit well-suited for production drilling environments where tool life and hole quality matter. A web-thinned, parallel web configuration further reduces entry force. This bit is intended for use by machinists, maintenance technicians, and metalworking professionals.

This drill bit is rated for primary use in titanium alloy workpieces and is appropriate for other hard and abrasive metals common in precision machining, aerospace maintenance, and industrial fabrication. The stub length design provides added rigidity compared to jobber-length bits, reducing deflection in short-hole applications. The straight-cylindrical shank accepts standard drill chucks and collet systems. Coolant-through capability is not supported on this bit.

Key Features

• Cobalt construction for heat and wear resistance in hard metals including titanium alloy
• 130-degree drill point angle with web thinning for reduced entry thrust and improved centering
• Parabolic flute geometry promotes efficient chip evacuation at higher feed rates
• Stub length (DIN 1897) provides rigidity and minimizes deflection in short-hole drilling
• Straight-cylindrical shank fits standard chucks and collet holders
• Diameter tolerance of +0.000 to -0.018 mm for consistent hole sizing

Compatibility

Designed as a DIN 1897 stub-length replacement drill bit for use in standard drill chucks and collet systems accepting a 0.1563-inch straight-cylindrical shank. Primary workpiece material rated for titanium alloy; also suitable for other hard metals within the same drill diameter range of 0.1500 to 0.2000 inches.

Installation Notes

Installation and use should be performed by a qualified machinist or metalworking technician familiar with drill press or CNC spindle setup. Secure the shank fully in the chuck or collet and verify runout before drilling. Always wear appropriate PPE and follow machine guarding requirements when operating rotary cutting tools. Do not exceed the maximum drilling depth of 0.6320 inches per pass without retracting to clear chips.