{"product_id":"guhring-9038990015800-micro-drill-bit-1-58mm-solid-carbide","title":"Guhring 9038990015800 Micro Drill Bit 1.58mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9038990015800 is a solid carbide micro drill bit designed for precision drilling in demanding metalworking applications. Built to Series 3899 specifications, it features a 1.58 mm diameter with an h7 tolerance, a 140-degree faceted point angle, and a TiAlN coating that extends tool life in abrasive and high-temperature cutting conditions. The spiral flute geometry with web thinning promotes efficient chip evacuation and reduces thrust force at entry. With an overall length of 38 mm and a 3 mm straight-cylindrical shank, this drill is suited for use in CNC machining centers, drill presses, and precision hand-held spindles operated by machinists and toolroom technicians.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is intended for use on cast iron and steel workpieces, corresponding to ISO material codes K and P. The 5xD flute-to-diameter ratio and a maximum drilling depth of 7.63 mm make it well matched for shallow to moderate-depth micro hole applications in production and job shop environments. The right-hand cut direction is standard for conventional spindle rotation. Machinists working on tight-tolerance components, mold work, or precision assemblies will find the h7 shank diameter tolerance suitable for collet-based toolholding systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.58 mm drill diameter with h7 tolerance for accurate collet fitment\u003c\/li\u003e\n  \u003cli\u003e140-degree faceted point angle reduces walking and improves entry accuracy\u003c\/li\u003e\n  \u003cli\u003eTiAlN coating provides thermal resistance and extended wear life on ferrous materials\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned geometry lowers axial thrust and supports clean hole entry\u003c\/li\u003e\n  \u003cli\u003eSolid carbide K40 grade construction maintains rigidity at micro diameters\u003c\/li\u003e\n  \u003cli\u003eSpiral flute with 5xD ratio supports chip clearance up to 7.63 mm depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with cast iron and steel workpieces. The 3 mm straight-cylindrical shank is compatible with standard collet chucks and drill chucks accepting that shank diameter. Suited for CNC machining centers and precision drilling equipment using right-hand spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool should be installed by a qualified machinist familiar with micro-diameter tooling and collet-based toolholding. Ensure the spindle and toolholder are clean and free of debris before seating the shank. At micro diameters, runout control is critical — verify toolholder runout is within acceptable limits before operation. Follow the machine manufacturer and applicable shop safety guidelines when setting speeds and feeds for solid carbide tooling in ferrous materials.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.58 mm (0.0622 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 38 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 10 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 7.63 mm (0.3000 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\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\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: K40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3899\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\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: 9038990015800\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51749840421170,"sku":"9038990015800","price":48.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a3b1ff8f610a0e8d8a5a6079767ab2b1_bf0874ce-ad3e-400e-8d99-7dfcec7d211b.jpg?v=1788911122","url":"https:\/\/voomisupply.com\/products\/guhring-9038990015800-micro-drill-bit-1-58mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}