{"product_id":"hertel-74131574-screw-machine-drill-bit-3-8-in-cobalt-tialn","title":"Hertel 74131574 Screw Machine Drill Bit 3\/8 in Cobalt Tialn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74131574 is a screw machine length drill bit engineered for high-performance drilling in tough materials. Built from cobalt steel with a TiAlN (titanium aluminum nitride) coating, it handles hardened steels, stainless, and abrasive alloys where standard high-speed steel bits wear out quickly. The 135-degree split point reduces walking on entry and lowers thrust force needed at the spindle. At 3.125 inches overall length, this stub-length design provides added rigidity compared to jobber-length bits, minimizing deflection in demanding machine tool applications. It is sold as a single bit per package.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for use in machining centers, drill presses, and manual machines where tight tolerances and shorter setups are required. The screw machine length format is a common choice in production environments where tool overhang must be minimized. Metalworking shops, maintenance machinists, and tool-and-die professionals are the primary users. It is appropriate for drilling operations in ferrous metals, stainless steel, titanium alloys, and similar hard materials where cobalt and TiAlN coating provide a measurable service life advantage over uncoated HSS tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt steel construction with TiAlN coating for extended tool life in hard and abrasive metals\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and eliminates the need for a center punch on flat surfaces\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length at 3.125 inches OAL for increased rigidity and reduced deflection\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute with web-thinned, parallel web configuration for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks and collet holders without modification\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction; no coolant-through capability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement screw machine length drill bit for any machine tool or drill press accepting a straight cylindrical shank in the 0.3500 to 0.4000 decimal inch drill size range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and maintenance technicians using standard drill chucks or ER collet systems. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully and evenly in the chuck or collet to prevent runout. Verify spindle speed and feed rate are appropriate for the workpiece material before starting the cut; excessive speed in hard alloys will degrade the coating prematurely.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\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\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\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\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\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\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\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.3500 to 0.4000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.44 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: 74131574\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740233498930,"sku":"74131574","price":22.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7f09a3d5a0133ace99f9cbf700830e6c.jpg?v=1788823662","url":"https:\/\/voomisupply.com\/products\/hertel-74131574-screw-machine-drill-bit-3-8-in-cobalt-tialn","provider":"Voomi Supply","version":"1.0","type":"link"}