{"product_id":"hertel-74131137-screw-machine-drill-bit-letter-a","title":"Hertel 74131137 Screw Machine Drill Bit Letter a","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74131137 is a screw machine length cobalt drill bit designed for high-speed drilling in tough materials including stainless steel, hardened alloys, and heat-resistant metals. Built to the HSCO135 series specification, it features a 135-degree split point that reduces walking on entry and minimizes the need for a center punch. The web-thinned, parallel web configuration reduces thrust and improves chip evacuation. At 2-7\/16 inches overall length, this short-length format provides added rigidity in CNC machine tools, drill presses, and production setups where deflection must be minimized.\u003c\/p\u003e\u003cp\u003eThis bit is suited for production machining environments, toolroom work, and maintenance operations involving difficult-to-machine materials. The straight cylindrical shank fits standard drill chucks and collet holders without adapters. With a 1-5\/16 inch flute length and a drill diameter of 0.2340 inches, it covers the Letter A size range used in tapping and close-tolerance hole work. Machinists, tool-and-die technicians, and industrial maintenance professionals are the primary users of this type of tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces entry walking and lowers thrust requirements\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web improves chip clearance and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eCobalt construction with straw finish provides heat and wear resistance in hard materials\u003c\/li\u003e\n\u003cli\u003eScrew machine length body adds rigidity and reduces deflection versus jobber-length bits\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting, regular spiral flute for standard clockwise spindle operation\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank for universal chuck and collet compatibility\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 0.2000 to 0.2500 inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians using standard drill chuck or collet tooling. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Secure the shank fully within the chuck or collet to the recommended engagement depth to prevent slippage under load. Do not exceed the recommended feed and speed parameters for cobalt tooling in the material being drilled.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2340 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Fractional Inch)\u003c\/strong\u003e: 15\/64 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\u003eOverall Length\u003c\/strong\u003e: 2-7\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-5\/16 inches\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\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\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\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\u003eSeries\u003c\/strong\u003e: HSCO135\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241635\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.28 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: 74131137\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51741151789362,"sku":"74131137","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7cf925bd9b3bf964f193306c2bfb658f.jpg?v=1788829652","url":"https:\/\/voomisupply.com\/products\/hertel-74131137-screw-machine-drill-bit-letter-a","provider":"Voomi Supply","version":"1.0","type":"link"}