{"product_id":"kennametal-3640720-screw-machine-drill-bit-12mm-carbide","title":"Kennametal 3640720 Screw Machine Drill Bit 12mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 3640720 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding materials. It features a 12.00 mm diameter, a 140-degree split point, and a TiAlN coating that extends tool life in high-heat applications. The overall length is 102.00 mm with a 55.00 mm flute length and a maximum drilling depth of 40.00 mm. Coolant-through construction supports internal coolant delivery to the cutting zone. This bit is designed for use by machinists and toolroom technicians working on CNC machining centers and drill presses in production environments.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for high-temperature alloy and stainless steel workpieces where tool wear and heat generation are primary concerns. The 3xD flute-to-diameter ratio and web-thinned parallel web configuration reduce thrust force and improve chip evacuation. It is a practical choice for aerospace, defense, medical, and industrial manufacturing applications where consistent hole quality and dimensional accuracy are required across high-cycle production runs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eTiAlN coating improves heat resistance and extends tool life in high-temperature alloys and stainless steel\u003c\/li\u003e\n\u003cli\u003e140-degree point angle reduces thrust and improves centering on entry\u003c\/li\u003e\n\u003cli\u003eCoolant-through design delivers coolant directly to the cutting edge for thermal management and chip flushing\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web reduces cutting forces and supports efficient chip flow\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank compatible with standard drill chucks and collet holders\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for consistent geometry and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and production tooling option for machining centers and drill presses using standard straight-shank toolholders in the 12.00 mm diameter range. Primary workpiece materials are high-temperature alloys and stainless steel per Series B291-YPL application guidelines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the machine fully powered down and locked out per applicable OSHA lockout\/tagout procedures. Ensure the shank seating in the collet or chuck is clean and free of chips before clamping. Verify coolant-through passages are clear and coolant pressure is set per the machining center's tooling specifications before initiating a cut. Do not exceed the maximum drilling depth of 40.00 mm in a single pass without confirming chip evacuation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 12.00 mm (0.4724 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 102.00 mm (4.0157 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 55.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 40.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 12.00 mm (0.4688 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 45.00 mm (1.7717 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 2.30 mm\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: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: High Temperature Alloy, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.007 to +0.025 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B291-YPL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.26 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3640720\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51728488169778,"sku":"3640720","price":409.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d7f89841df432287619aac7306a2f795.jpg?v=1788692008","url":"https:\/\/voomisupply.com\/products\/kennametal-3640720-screw-machine-drill-bit-12mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}