{"product_id":"hertel-74148917-drill-bit-letter-e-solid-carbide-135-deg","title":"Hertel 74148917 Drill Bit Letter E Solid Carbide 135 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74148917 is a screw machine length drill bit designed for high-performance drilling in hard and abrasive materials. Built from solid carbide grade C2, this bit measures 0.2500 inches in diameter (Letter E) with a 2.5-inch overall length and a 1.375-inch flute length. The 135-degree split point reduces thrust on entry and minimizes walking, while the slow spiral flute geometry promotes chip evacuation in tough materials. It ships bright and uncoated with a parallel web and web-thinned geometry for consistent cutting performance. Licensed HVAC techs, machinists, and metalworking professionals use this bit in precision drilling applications where dimensional accuracy and tool life matter.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for drilling cast iron, nickel alloys, stainless steel, titanium alloys, and tool steel. The screw machine length  -  shorter than jobber length  -  provides added rigidity and reduced deflection in CNC machining centers, drill presses, and manual operations where stub-length tooling is specified. The straight cylindrical shank seats securely in standard drill chucks and collets. It is part of the HERTEL HSSC135-SS series, which targets stainless and specialty alloy applications where standard HSS bits fail prematurely.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide C2 grade construction for extended tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces entry thrust and prevents bit walking on curved or hardened surfaces\u003c\/li\u003e\n\u003cli\u003eSlow spiral flute design promotes chip clearance when drilling stainless steel, nickel alloys, and titanium\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web lowers cutting resistance and improves penetration rate\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length adds rigidity and reduces deflection versus jobber-length bits\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish maintains dimensional accuracy without coating buildup on cutting edges\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a stub-length replacement or primary tooling option for applications in cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. Part of the HERTEL HSSC135-SS series for specialty alloy drilling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by machinists or tooling technicians in drill presses, CNC machining centers, or hand-operated drill equipment with a compatible chuck or collet sized for a straight cylindrical shank. Ensure the spindle is fully stopped and de-energized before bit changes. Use appropriate cutting fluid or coolant for stainless and titanium applications even though this bit does not feature through-coolant capability. Verify chuck runout and shank seating before operating to maintain the stated diameter tolerance of plus 0.0000 to minus 0.0005 inches.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: E\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 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: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Slow 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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: plus 0.0000 to minus 0.0005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Cast Iron, Nickel Alloy, Stainless Steel, Titanium Alloy, Tool Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HSSC135-SS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: 74148917\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743071437106,"sku":"74148917","price":33.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a0c0051ef8e4203b3d17b9c9db6123e6.jpg?v=1788842225","url":"https:\/\/voomisupply.com\/products\/hertel-74148917-drill-bit-letter-e-solid-carbide-135-deg","provider":"Voomi Supply","version":"1.0","type":"link"}