{"product_id":"hertel-74131368-screw-machine-drill-bit-letter-y-cobalt","title":"Hertel 74131368 Screw Machine Drill Bit Letter Y Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 74131368 is a cobalt screw machine length drill bit sized to Letter Y (0.4040 inches decimal equivalent) with a 135-degree split point. Screw machine length bits are shorter than jobber length, providing increased rigidity and reduced deflection in close-tolerance drilling applications. The split point geometry eliminates the need for a center punch and engages the workpiece immediately, reducing walking on entry. This bit is suited for drilling steel, stainless steel, cast iron, and other tough ferrous materials where standard high-speed steel tooling wears prematurely. Licensed machinists, tool-and-die makers, and maintenance technicians are the primary users.\u003c\/p\u003e\u003cp\u003eThis bit is appropriate for use in drill presses, CNC machining centers, turret lathes, and hand-held drill motors where stub-length tooling is preferred. The straight cylindrical shank fits standard drill chucks without adapters. The cobalt steel construction with straw finish handles elevated cutting temperatures generated in hard or abrasive materials. It is well-suited for production environments drilling in the 0.4000 to 0.4500 inch size range where repeated, accurate hole sizing is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter Y size  -  0.4040 inches decimal equivalent, within the 0.4000 to 0.4500 inch range\u003c\/li\u003e\n\u003cli\u003e135-degree split point for immediate bite and reduced thrust force on entry\u003c\/li\u003e\n\u003cli\u003eCobalt construction for heat resistance in hard and abrasive ferrous materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web reduces cutting resistance and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length body increases rigidity and minimizes deflection\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute, 2-flute regular spiral configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or standard addition for any drill chuck or collet accepting a straight cylindrical shank in the 0.4040 inch diameter range, consistent with HERTEL Series HSCO135 screw machine length tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall into a drill chuck or collet rated for the shank diameter and ensure the shank is fully seated and secured before operation. Power down and de-energize or lock out the machine spindle before changing tooling. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole tolerance. Inspect the split point for chipping before each use  -  a damaged point affects hole location accuracy and surface finish.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: Letter Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecimal Inch Size\u003c\/strong\u003e: 0.4040 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-15\/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\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize Range\u003c\/strong\u003e: 0.4000 to 0.4500 inches\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: 0.54 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: 74131368\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51741010297138,"sku":"74131368","price":24.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8623feb14adb966b2a2cbe476edc5d87.jpg?v=1788828858","url":"https:\/\/voomisupply.com\/products\/hertel-74131368-screw-machine-drill-bit-letter-y-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}