{"product_id":"guhring-9003290140000-cobalt-stub-drill-bit-0-5512-in","title":"Guhring 9003290140000 Cobalt Stub Drill Bit 0.5512 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9003290140000 is a cobalt (M35 grade) stub-length drill bit engineered for demanding metalworking applications. It carries a 0.5512-inch (14.00 mm) diameter with a 130-degree cone-relief point and a web-thinned tip that reduces entry thrust and improves centering on hard materials. The two-flute, regular-spiral geometry moves chips efficiently in short-hole operations. Overall length is 107.00 mm with a 54.00 mm flute length and a straight-cylindrical shank. Licensed HVAC techs, machinists, and maintenance mechanics working with high-strength alloys rely on this Series 329 bit where a standard HSS drill would work-harden the workpiece.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is sized for stub-length (screw machine length) applications where clearance is limited or rigidity is the priority over depth. Its primary workpiece material rating is titanium alloy, making it well-suited for aerospace maintenance, medical device shops, and industrial facilities that regularly machine Ti-6Al-4V and similar grades. The maximum drilling depth is 1.2990 inches (33.00 mm), consistent with its 3xD flute-to-diameter ratio. The DIN 1897 standard governs its geometry and dimensional tolerances.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM35 cobalt steel construction rated for titanium alloy and other high-strength workpiece materials\u003c\/li\u003e\n  \u003cli\u003e130-degree cone-relief point with web thinning reduces thrust and improves self-centering\u003c\/li\u003e\n  \u003cli\u003eStub (screw machine) length improves rigidity and reduces deflection in tight-clearance setups\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank with h8 diameter tolerance fits standard drill chucks and collet systems without modification\u003c\/li\u003e\n  \u003cli\u003eRegular-spiral, two-flute design promotes efficient chip evacuation in short-hole drilling\u003c\/li\u003e\n  \u003cli\u003eManufactured to DIN 1897 specification for consistent geometry across production runs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 1897 Series 329 stub-length drill bit with a 14.00 mm straight-cylindrical shank; fits any drill press, CNC machining center, or hand drill with a chuck or collet accepting a 14.00 mm shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the shank fully in a properly sized collet or keyed chuck before operation and verify runout before drilling titanium or other work-hardening alloys. Use appropriate cutting fluid or coolant rated for cobalt tooling and titanium to prevent thermal damage to both the bit and the workpiece. Allow the spindle to reach full speed before contact and maintain consistent feed pressure to avoid rubbing, which work-hardens titanium and shortens tool life. Follow shop-specific tooling safety protocols and applicable OSHA machine-guarding requirements when operating drill presses or CNC equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.5512 inches (14.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 107.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 54.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.2990 inches (33.00 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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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: 14.00 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\u003ePoint Type\u003c\/strong\u003e: Cone Relief\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: Titanium Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: h8\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: 329\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\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: 9003290140000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51753186197810,"sku":"9003290140000","price":86.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d8068c55aed77b447b444d15a3749dc5_32ae24e2-4fba-462c-ac8c-041a9f451f9c.jpg?v=1788933648","url":"https:\/\/voomisupply.com\/products\/guhring-9003290140000-cobalt-stub-drill-bit-0-5512-in","provider":"Voomi Supply","version":"1.0","type":"link"}