{"product_id":"guhring-9005490079000-jobber-drill-bit-7-9-mm-hss","title":"Guhring 9005490079000 Jobber Drill Bit 7.9 Mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9005490079000 is a jobber length drill bit designed for precise hole-making in a range of materials. Built from high speed steel with a bright uncoated finish, this bit measures 7.9 mm (0.311 inches) in diameter and delivers a 130-degree standard point angle optimized for clean entry and reduced thrust. The parabolic flute geometry promotes efficient chip evacuation, reducing clogging during longer cuts. With an overall length of 117 mm (4-39\/64 inches) and a flute length of 75 mm (2-61\/64 inches), it conforms to DIN 338 standards. Rated as high performance grade, this bit suits shops and tradespeople who require consistent results on production runs or precision service work.\u003c\/p\u003e\u003cp\u003eThis drill bit is classified for primary use in aluminum as well as non-ferrous and ferrous workpiece materials corresponding to material codes K, N, and P. The straight-cylindrical shank fits standard drill chucks found on bench drills, hand drills, and CNC drilling equipment. Its parabolic flute design with a 5xD flute-to-diameter ratio makes it well suited to drilling deeper holes without frequent retract cycles. Machinists, maintenance technicians, and fabricators working in metalworking, HVAC fabrication, and industrial maintenance will find this a reliable daily-use bit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7.9 mm (0.311 inches) diameter with a diameter tolerance of -0.022 to 0.000 mm for consistent fit\u003c\/li\u003e\n\u003cli\u003e130-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner starts\u003c\/li\u003e\n\u003cli\u003eParabolic flute geometry with 5xD ratio for efficient chip removal in deeper holes\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with bright uncoated finish suitable for aluminum and multi-material applications\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks across hand and machine tools\u003c\/li\u003e\n\u003cli\u003eMeets DIN 338 specification for jobber length drill bits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-spec replacement or direct-use jobber length drill bit for applications requiring a 7.9 mm straight-cylindrical shank bit conforming to DIN 338, Series 549.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by machinists, maintenance technicians, and fabricators using standard drill chucks on manual or CNC equipment. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before drilling. For aluminum and non-ferrous materials, use appropriate cutting fluid or lubrication to extend bit life and improve hole quality. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 7.9 mm (0.311 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: 117 mm (4-39\/64 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 75 mm (2-61\/64 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 63.15 mm (2.486 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.311 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 42 mm\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 By Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum (K, N, P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.022 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: 549\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\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: 9005490079000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51750531432754,"sku":"9005490079000","price":41.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c5adebb45a852f7cd5fbafe0fe6376fb.jpg?v=1788916287","url":"https:\/\/voomisupply.com\/products\/guhring-9005490079000-jobber-drill-bit-7-9-mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}