{"product_id":"hertel-74130352-3-8-inch-cobalt-screw-machine-drill-bit","title":"Hertel 74130352 3\/8 Inch Cobalt Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74130352 is a screw machine length drill bit engineered for high-performance drilling in tough materials. Built from cobalt high-speed steel (HSCO), it handles heat and wear better than standard HSS tooling, making it well-suited for stainless steel, cast iron, titanium alloys, and hardened materials. The 135-degree split point geometry reduces walking and minimizes the need for a center punch, allowing the bit to bite immediately on contact. At 3.125 inches overall length with a 1.8125-inch flute, this stub-length format provides extra rigidity compared to jobber-length bits, reducing deflection in short-hole drilling applications. Installed by machinists, maintenance technicians, and fabricators, it fits standard drill presses, CNC machines, and hand-held drilling equipment.\u003c\/p\u003e\u003cp\u003eThis drill bit is designed for screw machine and stub-length applications where rigidity and hole accuracy are priorities. The 0.375-inch diameter and straight cylindrical shank make it compatible with standard three-jaw chucks and collet holders. It is commonly used in production drilling, maintenance and repair operations, and fabrication environments where materials resist conventional HSS tooling. The regular spiral flute, two-flute configuration, and web-thinned parallel web support efficient chip evacuation during through-hole and blind-hole drilling in ferrous and non-ferrous metals.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt (HSCO) construction for heat resistance and extended tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust, prevents walking, and eliminates center-punch requirements\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web lowers cutting resistance and improves chip flow\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length at 3.125 inches OAL provides superior rigidity over jobber-length alternatives\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting, regular spiral, two-flute design for standard drilling applications\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 direct-fit replacement for 3\/8-inch stub-length cobalt drill bits in standard three-jaw chucks, collet systems, and drill press spindles accepting straight-shank tooling in the 0.35 to 0.40 inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or maintenance technician familiar with rotating cutting tool safety. Always power down and lock out the machine before securing or removing the bit from the chuck or collet. Confirm the shank is fully seated and the chuck is tightened before starting the spindle. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 3.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.8125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (HSCO)\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\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\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\u003eWeb Configuration\u003c\/strong\u003e: Parallel Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Diameter Range\u003c\/strong\u003e: 0.3500 to 0.4000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.45 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: 74130352\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51748557586738,"sku":"74130352","price":20.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dadd972770f7d109c6c141f57a5c08be.jpg?v=1788895193","url":"https:\/\/voomisupply.com\/products\/hertel-74130352-3-8-inch-cobalt-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}