{"product_id":"guhring-9006580030500-cobalt-jobber-drill-bit-no-31","title":"Guhring 9006580030500 Cobalt Jobber Drill Bit No. 31","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9006580030500 is a cobalt jobber-length drill bit in wire gauge size No. 31, with a decimal diameter of 0.1201 inches. It features a titanium nitride (TiN) coating over a cobalt steel body, offering increased surface hardness and extended tool life in production drilling applications. The 130-degree split point with web thinning reduces thrust and improves centering without a pilot hole. The parabolic flute geometry promotes efficient chip evacuation in deeper holes. This bit is designed for professional machinists, tool-and-die workers, and maintenance technicians who require consistent, tight-tolerance holes in ferrous and cast materials.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for drilling cast iron and steel in job shop, manufacturing, and maintenance-repair-operations (MRO) environments. The Series 658 designation identifies it as a high-performance DIN 338 standard bit, making it a direct fit for CNC drill presses, manual drill presses, and hand-held drilling equipment with a straight-shank chuck. The 2-9\/16 inch overall length and straight-cylindrical shank are consistent with standard jobber-length tooling setups across light and medium-duty drilling stations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt steel construction with TiN coating for extended wear resistance in ferrous materials\u003c\/li\u003e\n  \u003cli\u003e130-degree point angle with web thinning for reduced entry thrust and self-centering performance\u003c\/li\u003e\n  \u003cli\u003eParabolic flute profile for fast, clean chip evacuation in cast iron and steel\u003c\/li\u003e\n  \u003cli\u003eDIN 338 standard geometry ensures dimensional interchangeability with standard jobber-length tooling\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard 3-jaw drill chucks\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance of -0.018 to 0.000 mm for consistent, repeatable hole sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and production tooling option for applications requiring a wire gauge No. 31 jobber-length drill bit per DIN 338. Primary workpiece materials include cast iron and steel.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists or tooling technicians familiar with rotary cutting tools. Secure the straight-cylindrical shank fully in a keyed or keyless 3-jaw chuck before operation, and confirm the spindle speed is appropriate for the workpiece material and bit diameter before engaging the cut. Do not exceed the maximum drilling depth of 1.237 inches without retracting to clear chips. Inspect the cutting edges and TiN coating before each use; discard the bit if chipping or coating degradation is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 31\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal Inch)\u003c\/strong\u003e: 0.1201 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\u003eOverall Length\u003c\/strong\u003e: 2-9\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 36.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 29.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.237 inches (31.43 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1201 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Titanium Nitride (TiN)\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\u003eDiameter Tolerance\u003c\/strong\u003e: -0.018 to 0.000 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 338\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 658\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: 9006580030500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51730476204338,"sku":"9006580030500","price":42.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/df712ab646e97ecbc82e1bfc7c77fbd5.jpg?v=1788718128","url":"https:\/\/voomisupply.com\/products\/guhring-9006580030500-cobalt-jobber-drill-bit-no-31","provider":"Voomi Supply","version":"1.0","type":"link"}