{"product_id":"hertel-74147612-cobalt-drill-bit-51-64-in-1-2-in-shank","title":"Hertel 74147612 Cobalt Drill Bit 51\/64 in 1\/2 in Shank","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 74147612 is a reduced shank cobalt drill bit designed for drilling into tough, high tensile strength materials. Built from cobalt steel, this bit holds up under the heat and stress that standard high-speed steel cannot handle. The drill point is ground to a 118-degree standard point angle, making it suitable for general-purpose drilling on hard ferrous metals and alloys. At 5 inches overall length with a 3-inch flute length and an oxide straw finish, this bit is a reliable production-floor and maintenance choice for machinists, tool-and-die shops, and industrial maintenance professionals.\u003c\/p\u003e\n\u003cp\u003eThis bit is intended for use in applications where the drill diameter exceeds the available spindle collet or chuck capacity. The 51\/64-inch cutting diameter is paired with a reduced 1\/2-inch straight-cylindrical shank, allowing the bit to seat in standard 1\/2-inch drill chucks on drill presses, magnetic drills, or CNC machining centers. Right-hand spiral flute geometry supports efficient chip evacuation during through-hole and blind-hole drilling operations on tough high tensile strength workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction resists heat and wear when drilling hard, high tensile strength materials\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for general-purpose drilling on ferrous metals and alloys\u003c\/li\u003e\n  \u003cli\u003eReduced 1\/2-inch straight-cylindrical shank fits standard 1\/2-inch drill chucks\u003c\/li\u003e\n  \u003cli\u003eOxide straw finish provides light corrosion resistance and reduces friction during entry\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, right-hand cut flute geometry promotes consistent chip clearance\u003c\/li\u003e\n  \u003cli\u003e3-inch maximum drilling depth with 5-inch overall length for controlled reach\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a reduced shank replacement bit for use in any 1\/2-inch drill chuck application requiring a 51\/64-inch bore diameter in tough high tensile strength materials.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the 1\/2-inch shank fully into the chuck before operation and confirm the set screw or chuck key is tightened to manufacturer specification. Use appropriate cutting fluid or coolant for the workpiece material, as cobalt bits can sustain heat but fluid extends tool life. A licensed machinist or qualified industrial maintenance technician should verify spindle speed and feed rate are appropriate for the workpiece before drilling. Inspect the cutting edges for wear or chipping before each use and replace if edges show visible degradation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 51\/64 inch (0.7969 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch\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: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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: Oxide Straw\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Tough High Tensile Strength Materials\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant\u003c\/strong\u003e: No (dry rated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.48 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: 74147612\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51739586036018,"sku":"74147612","price":130.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ba9ebe4be576720799b9796ea80f854b.jpg?v=1788816606","url":"https:\/\/voomisupply.com\/products\/hertel-74147612-cobalt-drill-bit-51-64-in-1-2-in-shank","provider":"Voomi Supply","version":"1.0","type":"link"}