{"product_id":"guhring-9006590042000-stub-drill-bit-0-1654-in-cobalt","title":"Guhring 9006590042000 Stub Drill Bit 0.1654 in Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9006590042000 is a stub-length (screw machine length) twist drill bit built for demanding metal-cutting applications. It carries a 4.20 mm (0.1654 inch) diameter, an M35 cobalt steel construction, and a titanium nitride (TiN) tip coating. The 130-degree split point and web-thinned geometry reduce thrust force at entry and improve centering without a center punch. This bit is sized for production drilling environments where a shorter flute column provides rigidity and reduced deflection in CNC machining centers, drill presses, and hand-fed power tools.\u003c\/p\u003e\u003cp\u003eDesigned primarily for titanium alloy workpieces, this bit also performs in stainless steel, high-strength alloys, and other difficult-to-machine materials. The stub length format keeps the flute column short at 0.8661 inches, which stiffens the tool against walking and chatter in close-tolerance hole work. Machinists, toolroom technicians, and maintenance mechanics working in aerospace, medical device, and precision fabrication environments will find this bit well-suited for repeat-hole drilling cycles where tool life and hole quality matter.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt steel body withstands elevated cutting temperatures in hard and exotic alloys\u003c\/li\u003e\n\u003cli\u003eTiN tip coating reduces friction at the cutting edge and extends tool life between regrinds\u003c\/li\u003e\n\u003cli\u003e130-degree split point with web thinning improves self-centering and lowers entry thrust\u003c\/li\u003e\n\u003cli\u003eStub (screw machine) length keeps flute column at 0.8661 inches for maximum rigidity\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eTapered web and regular spiral flute configuration promotes chip evacuation in blind holes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-specification stub-length drill bit conforming to DIN 1897 standards, fitting standard straight-shank drill chucks accepting a 4.20 mm shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or maintenance technician familiar with cutting tool setup. Ensure the drill chuck is clean and fully seated before tightening to prevent shank slip. Power down or de-energize the machine spindle completely before changing or inspecting the bit. When drilling titanium or high-strength alloys, use appropriate cutting fluid and do not exceed the recommended feed and speed range for cobalt tooling to avoid work hardening the workpiece surface.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 4.20 mm \/ 0.1654 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 55.00 mm \/ 2.1654 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 22.00 mm \/ 0.8661 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 33.00 mm \/ 1.2992 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.20 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 22.00 mm \/ 0.8661 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\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard with Web Thinning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt M35\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Coating\u003c\/strong\u003e: TiN (Titanium Nitride)\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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: 659\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 pounds\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: 9006590042000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51748121444658,"sku":"9006590042000","price":26.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/761e63e1fdcfb537d934d2eb2262a0ff.jpg?v=1788889319","url":"https:\/\/voomisupply.com\/products\/guhring-9006590042000-stub-drill-bit-0-1654-in-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}