{"product_id":"guhring-9006590042500-cobalt-stub-drill-bit-0-1673-in","title":"Guhring 9006590042500 Cobalt Stub Drill Bit 0.1673 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9006590042500 is a cobalt stub-length (screw machine length) drill bit designed for demanding metal drilling applications. Manufactured to DIN 1897 standards, this Series 659 drill bit features a 0.1673-inch (4.25 mm) diameter with a 130-degree split-point angle and web-thinned tip geometry that reduces thrust and improves hole entry accuracy. The M35 cobalt steel construction provides elevated heat and wear resistance, making it well suited for cutting hard and abrasive materials. Two spiral flutes with a regular helix promote efficient chip evacuation during drilling. The bit weighs approximately 0.009 pounds.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use in titanium alloy workpieces and is applicable across other difficult-to-machine metals including stainless steel and high-strength alloys. The stub-length body offers increased rigidity compared to jobber-length bits, reducing deflection in short-reach setups such as drill presses, CNC machining centers, and manual screw machine operations. It is most commonly installed by machinists, toolroom technicians, and industrial maintenance professionals working in manufacturing and precision fabrication environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM35 cobalt steel construction for heat and wear resistance in hard-metal drilling\u003c\/li\u003e\n  \u003cli\u003e130-degree point angle with web-thinned tip reduces entry thrust and improves centering\u003c\/li\u003e\n  \u003cli\u003eStub (screw machine) length body increases rigidity and minimizes deflection\u003c\/li\u003e\n  \u003cli\u003eTwo regular spiral flutes promote chip clearance throughout the cut\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eManufactured to DIN 1897 standard with h8 diameter tolerance for consistent sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use stub drill bit for applications requiring a 4.25 mm (0.1673-inch) diameter hole in titanium alloy and other hard metals. Falls within the Series 659 size range of 0.1500 to 0.2000 inch (3.50 to 5.00 mm) diameter bits manufactured to DIN 1897 specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists and toolroom technicians. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation, and ensure the spindle is fully stopped before changing bits. Follow applicable OSHA machining safety standards and wear appropriate eye and face protection. Do not exceed the recommended maximum drilling depth of 0.6150 inches (15.63 mm) for this stub-length bit without retracting to clear chips.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1673 inches (4.25 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 55.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 22.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.6150 inches (15.63 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular Helix\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.25 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (M35 grade)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Cone Relief, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 659\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.009 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9006590042500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51735036330290,"sku":"9006590042500","price":32.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b6a1d8ad4888b62221fd0e044217fccd_496c5b9d-a75c-4443-981d-1529ed3300aa.jpg?v=1788769503","url":"https:\/\/voomisupply.com\/products\/guhring-9006590042500-cobalt-stub-drill-bit-0-1673-in","provider":"Voomi Supply","version":"1.0","type":"link"}