{"product_id":"guhring-9003010002100-micro-drill-bit-wire-91-cobalt","title":"Guhring 9003010002100 Micro Drill Bit Wire 91 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9003010002100 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. It carries a wire gauge size of 91, corresponding to a decimal diameter of 0.0083 inches, with an overall length of 0.984 inches. The 118-degree faceted point geometry provides accurate entry and reduces walking on entry into hard or abrasive workpiece materials. The spiral flute design promotes chip evacuation in shallow-depth bores, and the web-thinned, tapered web configuration reduces thrust force at the cutting tip. This bit is intended for use by machinists, tool-and-die specialists, and precision sheet metal fabricators working with tight-tolerance micro-diameter holes.\u003c\/p\u003e\u003cp\u003eThis drill bit is rated primarily for aluminum and non-ferrous materials, with secondary suitability for titanium alloys. It conforms to DIN 1899 specification, which governs short-flute micro drills. The straight-cylindrical shank with a 1.00 mm shank diameter is compatible with standard micro drill chucks and collet-style tool holders commonly used on CNC machining centers, benchtop drill presses, and precision hand drilling fixtures. Maximum recommended drilling depth is 0.047 inches (1.19 mm), reflecting the 5xD flute-to-diameter ratio of the Series 301 design. This product is sold individually with a minimum order quantity of 10 units.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire size 91 with 0.0083-inch decimal diameter for micro-precision bore work\u003c\/li\u003e\n\u003cli\u003eCobalt tool material provides heat resistance and edge retention in abrasive or work-hardening materials\u003c\/li\u003e\n\u003cli\u003e118-degree faceted point with web thinning reduces thrust and improves centering\u003c\/li\u003e\n\u003cli\u003eSpiral flute with tapered web configuration aids chip clearance in short-depth bores\u003c\/li\u003e\n\u003cli\u003eDIN 1899 compliant Series 301 design ensures dimensional consistency\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish suitable for aluminum, non-ferrous metals, and titanium alloys\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style micro drill conforming to DIN 1899 Series 301. Primary workpiece material compatibility is aluminum and non-ferrous metals (material codes K, M, N, P); secondary compatibility includes titanium alloy (material code S). Straight-cylindrical 1.00 mm shank fits standard micro drill chucks and precision collet holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists familiar with micro-diameter tooling. Secure the straight-cylindrical shank fully in a matched collet or micro chuck before operation to prevent runout and bit breakage. Due to the 0.0083-inch diameter, this bit is highly susceptible to breakage from side loading, improper feed rate, or misalignment. Always verify spindle runout and use appropriate low-feed, high-speed drilling parameters for the workpiece material per established machining standards.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 91\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal Inch)\u003c\/strong\u003e: 0.0083 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 0.984 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.50 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.047 inches (1.19 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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: 1.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.004 mm\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: Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Number\u003c\/strong\u003e: DIN 1899\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 301\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\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: 9003010002100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51737368887602,"sku":"9003010002100","price":171.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/56bc1cb038eeb2f3a016a74964879432.jpg?v=1788787685","url":"https:\/\/voomisupply.com\/products\/guhring-9003010002100-micro-drill-bit-wire-91-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}