{"product_id":"guhring-9005520035000-stub-drill-bit-3-50mm-hss","title":"Guhring 9005520035000 Stub Drill Bit 3.50mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005520035000 is a screw machine length (stub) drill bit designed for high-speed steel applications requiring accurate, repeatable hole entry in tight setups. Built to DIN 1897 standards, this bit measures 3.50 mm (0.1378 inches) in diameter with an overall length of 52.00 mm (2.0472 inches) and a parabolic flute length of 20.00 mm (0.7874 inches). The 130-degree point angle and web-thinned geometry promote fast chip evacuation and reduce thrust force on entry. It is intended for use by machinists, tool-and-die technicians, and precision fabricators working in production environments where stub-length rigidity is required.\u003c\/p\u003e\u003cp\u003eThis drill bit is optimized for aluminum as the primary workpiece material, making it a practical choice for aluminum machining operations in job shop, production floor, and CNC drilling setups. Its parabolic flute design supports efficient chip removal at higher feed rates typical in screw machine and short-run drilling work. The straight-cylindrical shank fits standard drill chucks without modification. Maximum recommended drilling depth is 0.5810 inches (14.75 mm), and the flute-to-diameter ratio is 3xD, consistent with stub-length performance in close-tolerance applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDIN 1897 stub-length geometry provides enhanced rigidity and reduced deflection during drilling\u003c\/li\u003e\n\u003cli\u003e130-degree point angle with web-thinned tip reduces entry thrust and improves hole positioning accuracy\u003c\/li\u003e\n\u003cli\u003eParabolic flute design promotes chip evacuation at elevated feed rates, particularly in aluminum\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated high speed steel finish suitable for non-ferrous and aluminum workpieces\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, straight-cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n\u003cli\u003eParallel web configuration with 3xD flute-to-diameter ratio balances chip clearance with core strength\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct fitment for applications requiring a DIN 1897 stub-length drill bit with a 3.50 mm diameter straight-cylindrical shank. Confirmed primary workpiece material is aluminum per manufacturer specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by machinists and precision drilling technicians using standard drill chucks, collets, or CNC tool holders. Ensure the machine spindle is fully de-energized and locked out before changing tooling. Secure the shank fully within the chuck or collet to the recommended grip depth before operation. Do not exceed the maximum drilling depth of 0.5810 inches (14.75 mm) per the 3xD flute ratio to avoid chip packing and bit breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3.50 mm (0.1378 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 52.00 mm (2.0472 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 20.00 mm (0.7874 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 14.75 mm (0.5810 inches)\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: Parabolic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 552\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 9005520035000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51749251547442,"sku":"9005520035000","price":18.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/02254bd0be450c60e3aaf15950ec7d2d.jpg?v=1788903612","url":"https:\/\/voomisupply.com\/products\/guhring-9005520035000-stub-drill-bit-3-50mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}