{"product_id":"hertel-04139499-cobalt-jobber-drill-bit-letter-v","title":"Hertel 04139499 Cobalt Jobber Drill Bit Letter V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 04139499 is a cobalt jobber-length drill bit sized to Letter V (0.3770 inches) with a 135-degree split point and oxide\/gold coating. Designed for heavy-duty holemaking in ferrous and hard materials, this bit features a right-hand spiral flute, web-thinned geometry, and a straight-cylindrical shank. The split point reduces walking at drill entry and lowers thrust force, which is important when drilling tough alloys, stainless steel, or hardened stock. Cobalt construction provides heat resistance beyond standard high-speed steel, making this bit suitable for production drilling and demanding shop environments where tool life is critical.\u003c\/p\u003e\u003cp\u003eThis drill bit fits standard jobber drilling applications in machining, fabrication, maintenance, and repair operations. The straight-cylindrical shank seats directly in conventional three-jaw drill chucks on drill presses, CNC machining centers, and handheld power drills. The 5-inch overall length and 3-5\/8-inch flute length are typical for Letter V jobber work in general-purpose and structural holemaking tasks. No coolant-through capability, so external cutting fluid or spray mist cooling is the appropriate approach in high-feed applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter V size: 0.3770 inches diameter for precise fractional and letter-series drilling\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and prevents bit walking on entry\u003c\/li\u003e\n\u003cli\u003eCobalt construction for elevated heat resistance and extended tool life in hard materials\u003c\/li\u003e\n\u003cli\u003eOxide and TiN coating improves surface hardness and lubricity\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web design lowers cutting resistance and chip clearance\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with regular helix for efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard jobber-series drill bit for use in any three-jaw chuck or collet system accepting a 0.3770-inch straight-cylindrical shank, compatible with drill presses, manual mills, and handheld power tools in that bore range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or qualified tradesperson should secure the shank fully in a properly sized chuck before operation. Ensure the drilling machine is powered down and de-energized before installing or removing the bit. Apply cutting fluid or mist coolant externally when drilling hard alloys to manage heat buildup, as this bit does not support coolant-through delivery. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is compromised.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3770 inches\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide and TiN\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 inches\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: 0.3770 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Jobber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.7 pounds\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: 04139499\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51731925926194,"sku":"04139499","price":23.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f233963917b44851143a74972c2e18a3.jpg?v=1788736720","url":"https:\/\/voomisupply.com\/products\/hertel-04139499-cobalt-jobber-drill-bit-letter-v","provider":"Voomi Supply","version":"1.0","type":"link"}