{"product_id":"guhring-9038990008900-micro-drill-bit-no-65-solid-carbide","title":"Guhring 9038990008900 Micro Drill Bit No. 65 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9038990008900 is a solid carbide micro drill bit designed for precision drilling in demanding metalworking applications. Sized at wire gauge No. 65 (0.0350 inches in diameter), it features a 140-degree faceted point angle and a TiAlN coating that extends tool life in high-heat cutting environments. The bit measures 38 millimeters in overall length with a 10-millimeter flute length and is web-thinned to reduce thrust and improve chip evacuation. A straight-cylindrical shank with a 3-millimeter diameter ensures secure chuck engagement. This tool is installed and used by machinists, tool-and-die makers, and precision fabricators working with tight-tolerance bore requirements.\u003c\/p\u003e\n\u003cp\u003eThis micro drill bit is suited for drilling cast iron and steel in applications where small-diameter, high-accuracy holes are required. The 5xD flute-to-diameter ratio supports controlled chip flow in shallow-to-moderate depth holes, with a maximum drilling depth of 8.67 millimeters (0.3410 inches). Right-hand spiral flutes and a regular spiral type make this bit compatible with standard CNC machining centers, drill presses, and precision hand equipment configured for right-hand rotation. Series 3899 is Guhring's micro-drill line targeting close-tolerance work in production and tool room environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire gauge No. 65 diameter — 0.0350 inches — for micro-precision bore work\u003c\/li\u003e\n  \u003cli\u003e140-degree faceted point with web thinning reduces entry thrust and improves centering\u003c\/li\u003e\n  \u003cli\u003eTiAlN coating increases heat resistance and extends tool life in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction in K40 material grade for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank, 3 millimeters in diameter, fits standard collets and chucks\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, regular spiral flute with h7 diameter tolerance for repeatable results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in cast iron and steel workpieces as noted by primary workpiece material codes K and P. Compatible with standard right-hand rotation spindles accepting a 3-millimeter straight-cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis drill bit is installed by machinists and CNC operators; ensure the spindle and all motion axes are fully stopped and locked out before changing tooling. Seat the shank fully in a collet or drill chuck rated for the shank diameter to prevent runout at micro-drill diameters. Do not exceed the recommended maximum drilling depth of 8.67 millimeters without retracting to clear chips. Coolant-through is not supported on this bit, so apply external coolant or cutting fluid appropriate for the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal Inch)\u003c\/strong\u003e: 0.0350 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 38 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 10 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 8.67 millimeters (0.3410 inches)\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\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\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\u003eDiameter Tolerance\u003c\/strong\u003e: h7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\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\u003eWeight\u003c\/strong\u003e: 0.003 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: 9038990008900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51738853278002,"sku":"9038990008900","price":48.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a3b1ff8f610a0e8d8a5a6079767ab2b1_ead99633-b08b-4da3-9d0c-f3b8c3c33bc7.jpg?v=1788805564","url":"https:\/\/voomisupply.com\/products\/guhring-9038990008900-micro-drill-bit-no-65-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}