{"product_id":"kennametal-3867757-extra-length-drill-bit-letter-e-solid-carbide","title":"Kennametal 3867757 Extra Length Drill Bit Letter E Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 3867757 is a solid carbide extra length drill bit sized at Letter E (0.2500 inches \/ 1\/4 inches) with a 135-degree standard point angle. Built from solid carbide with a bright, uncoated finish, it delivers the rigidity and wear resistance required for demanding drilling applications in hard and abrasive materials. The spiral flute geometry with a tapered web configuration promotes efficient chip evacuation, and the through-coolant capability allows direct delivery of cutting fluid to the tip. With a flute-to-diameter ratio of 16xD, this bit is engineered for deep-hole drilling where standard-length tooling cannot reach. It is installed and used by machinists and tool-and-die professionals on CNC machining centers and manual drill presses.\u003c\/p\u003e\n\u003cp\u003eThis extra length drill bit is suited for production and maintenance machining environments requiring deep bore capability in a single pass. The 4.6850-inch flute length and maximum drilling depth of 4.0945 inches make it appropriate for deep-hole work in structural components, mold and die blocks, and tooling fixtures. The straight-cylindrical shank with a diameter of 0.2756 inches seats securely in standard drill chucks and collet holders. Right-hand cutting direction follows conventional CNC and manual spindle rotation. It is a Series B271-HPS tool intended for use where solid carbide rigidity is required over high-speed steel alternatives.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003e135-degree standard point angle for accurate self-centering entry\u003c\/li\u003e\n  \u003cli\u003eThrough-coolant capability for direct fluid delivery at the cutting tip\u003c\/li\u003e\n  \u003cli\u003e16xD flute-to-diameter ratio enabling deep-hole drilling up to 4.0945 inches depth\u003c\/li\u003e\n  \u003cli\u003eTapered web configuration for improved chip evacuation\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish compatible with a wide range of cutting fluids and materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style solid carbide extra length drill bit in the KENNAMETAL B271-HPS series, compatible with standard drill chucks and collet holders accepting a 0.2756-inch straight-cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists using a compatible drill chuck or collet rated for the 0.2756-inch shank diameter. Ensure the machine spindle is fully stopped and the workpiece is securely fixtured before tool changes. Through-coolant supply lines should be confirmed active before deep-hole drilling cycles to prevent chip packing and tool breakage. Follow applicable machine tool safety standards and shop SOP for carbide tooling handling, as solid carbide is brittle and susceptible to chipping if dropped or side-loaded.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 1\/4 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\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2500 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: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 4.6850 inches (119 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.378 inches (162 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 4.0945 inches (104 mm)\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 16xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2756 inches (7.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4961 inches (38.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0461 inches (1.17 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0009 to 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B271-HPS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.147 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241637\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3867757\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51741492412722,"sku":"3867757","price":729.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c02a4c55bc2a3f3b3162ec6585ea7b26_638701d9-6070-40e8-83aa-6d839b10904c.jpg?v=1788831825","url":"https:\/\/voomisupply.com\/products\/kennametal-3867757-extra-length-drill-bit-letter-e-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}