{"product_id":"hertel-74131152-cobalt-drill-bit-letter-c-0-2420-in","title":"Hertel 74131152 Cobalt Drill Bit Letter C 0.2420 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 74131152 is a cobalt screw machine length drill bit sized to Letter C (0.2420 inches decimal equivalent) with a 135-degree split point and web-thinned geometry. Screw machine length bits are shorter than jobber length, providing added rigidity and reduced deflection in production drilling and tight-clearance applications. The split point starts on contact without a center punch and cuts aggressively through ferrous and hard alloy materials. With a straw finish and 2-flute regular spiral flute design, this bit is suited for HVAC technicians, pipefitters, plumbers, and machinists drilling through steel, cast iron, and stainless steel in the field or at a bench.\u003c\/p\u003e\n\u003cp\u003eThis bit is commonly used in trade applications requiring precise, repeatable hole sizing in metal  -  including sheet metal fabrication, mechanical room pipe hangers, structural steel brackets, and electrical enclosure work. The straight cylindrical shank fits standard drill chucks. The cobalt steel construction handles heat buildup better than standard HSS bits, making it a practical choice for harder materials and higher feed rates where conventional high-speed steel dulls prematurely.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter C size  -  0.2420 inch decimal equivalent for precise hole sizing\u003c\/li\u003e\n  \u003cli\u003e135-degree split point eliminates center-punch requirement and reduces walking\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, parallel web configuration reduces thrust and improves chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCobalt construction resists heat and wear when drilling hard alloys and stainless steel\u003c\/li\u003e\n  \u003cli\u003eScrew machine length (2.5 inches OAL) provides rigidity over jobber-length alternatives\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut with regular spiral flute  -  compatible with standard drill presses and hand drills\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use bit for standard straight-shank drill chucks in drill presses, hand drills, and CNC machines accepting straight cylindrical shanks in the 0.2420-inch size range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove drill bits only with the drill or press fully powered off and the chuck key removed from the chuck. Secure the workpiece with a clamp or vise before drilling  -  never hold metal freehand against a rotating bit. Use a cutting fluid or lubricant when drilling stainless steel or hard alloys to extend bit life and maintain point geometry. Inspect the split point for chipping or rounding before each use; a damaged point increases thrust requirements and reduces hole accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2420 inches\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: Straw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split Point\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: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel\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\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.2000 to 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.31 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 74131152\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743915868466,"sku":"74131152","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/89110670e7d22dd7343cabacdb42ce5b.jpg?v=1788851227","url":"https:\/\/voomisupply.com\/products\/hertel-74131152-cobalt-drill-bit-letter-c-0-2420-in","provider":"Voomi Supply","version":"1.0","type":"link"}