{"product_id":"hertel-74130428-cobalt-drill-bit-31-64-inch-135-degree","title":"Hertel 74130428 Cobalt Drill Bit 31\/64 Inch 135 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74130428 is a screw machine length drill bit designed for high-speed, high-heat drilling applications in metal and other hard materials. Built from cobalt high-speed steel (HSCO), this bit resists heat buildup that would degrade standard HSS tooling. The 135-degree split point starts on contact without a center punch, reducing walking and improving hole accuracy. At 3-11\/16 inches overall length, the screw machine format provides added rigidity over jobber-length bits, making it well suited for drill press, turret lathe, and CNC screw machine work where short, stiff tooling controls runout and improves finish.\u003c\/p\u003e\u003cp\u003eThis bit is used primarily in metalworking and machining environments where stainless steel, high-alloy steel, cast iron, or other tough materials are drilled at high cycle rates. The shorter overall length and parallel web configuration make it a common choice for production machining and repair shops. It is equally applicable on manual drill presses and automated equipment. Machinists, tool-and-die technicians, and maintenance trades install and use this type of bit regularly.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt HSCO construction for heat resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point for self-centering starts and reduced thrust\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web for improved chip evacuation and cutting efficiency\u003c\/li\u003e\n\u003cli\u003eScrew machine length at 3-11\/16 inches overall for maximum rigidity and runout control\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute with 2-3\/16 inch flute length for consistent chip flow\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for standard drill press and CNC spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit screw machine length drill bit for standard drill chucks and collet holders accepting a straight cylindrical shank in the 0.4500 to 0.5000 decimal inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and used by machinists and maintenance technicians on drill presses, lathes, and CNC equipment. Secure the straight shank fully in a properly sized chuck or collet before operation. Ensure the machine spindle is at a complete stop before changing or inspecting bits. Use appropriate cutting fluid for the workpiece material to extend bit life and maintain hole tolerance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 31\/64 inches (0.4844 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-11\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-3\/16 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 Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (HSCO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\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: 74130428\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51727379333426,"sku":"74130428","price":29.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d89b04aaa78ec915c7b33b9993f4b0bb.jpg?v=1788677000","url":"https:\/\/voomisupply.com\/products\/hertel-74130428-cobalt-drill-bit-31-64-inch-135-degree","provider":"Voomi Supply","version":"1.0","type":"link"}