{"product_id":"hertel-c-402-0790-jobber-drill-bit-7-90-mm-hss","title":"Hertel C.402.0790 Jobber Drill Bit 7.90 Mm Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.402.0790 is a high speed steel jobber-length drill bit sized at 7.90 mm (0.3110 inches) in diameter. It features a 118-degree standard point angle and a spiral flute configuration with right-hand cutting direction. The bit carries an oxide coating that provides basic lubricity and surface protection during drilling operations. With an overall length of 114 mm and a flute length of 81 mm, this is a general-purpose drill suited for machinists, maintenance mechanics, and metalworking trades who need a reliable straight-shank bit for everyday material removal tasks.\u003c\/p\u003e\u003cp\u003eThis jobber drill is intended for general-purpose drilling applications in metalworking, maintenance, and fabrication environments. The straight-cylindrical shank fits standard three-jaw drill chucks on benchtop drill presses, hand drills, and milling machine setups. Its 7.90 mm diameter falls within the 7.00 mm to 8.00 mm size range, making it appropriate for hole-making operations where metric sizing is specified. No coolant-through capability is present, so it is best suited for light-to-moderate duty applications with external lubrication or dry cutting where the material allows.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7.90 mm (0.3110 inch) diameter for precise metric-spec hole sizing\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle for general-purpose drilling in common metals and plastics\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction provides durability across a range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eOxide coating offers surface lubricity and basic corrosion resistance\u003c\/li\u003e\n\u003cli\u003eTwo-flute spiral design promotes chip evacuation during drilling\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber drill compatible with any standard drill chuck accepting straight-cylindrical shanks in the 7.00 mm to 8.00 mm size range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis drill bit is installed by a machinist or qualified maintenance mechanic using a standard keyed or keyless three-jaw chuck. Ensure the machine is fully powered down and the spindle is locked before changing bits. Apply appropriate cutting fluid or lubrication for the workpiece material when drilling metals to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point shows signs of dulling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 7.90 mm (0.3110 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 114 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 81 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 118 degrees\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: Spiral\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Oxide\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: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C.402.0790\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51731711983922,"sku":"C.402.0790","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/06f7684d39fee74162bd587c83ad35d9.jpg?v=1788734157","url":"https:\/\/voomisupply.com\/products\/hertel-c-402-0790-jobber-drill-bit-7-90-mm-hss","provider":"Voomi Supply","version":"1.0","type":"link"}