{"product_id":"kennametal-3894812-screw-machine-drill-bit-5-56mm-carbide","title":"Kennametal 3894812 Screw Machine Drill Bit 5.56mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 3894812 is a stub-length (screw machine length) solid carbide drill bit designed for high-precision drilling in demanding machining applications. Built to DIN 6535 standards, it features a 5.56 mm (0.2189 inch) cutting diameter with a 180-degree flat-bottom point geometry, making it well suited for flat-bottomed holes and controlled-depth drilling. The two-flute, right-hand spiral design promotes efficient chip evacuation. The bright\/uncoated finish is standard for applications where coating additives are not required. Machining professionals and tool-and-die technicians use this bit where tight tolerances and stub-length rigidity are critical.\u003c\/p\u003e\u003cp\u003eThis drill bit fits typical CNC machining centers, drill presses, and screw machine setups used in precision manufacturing environments. The straight cylindrical shank at 6.00 mm (0.2362 inch) diameter seats securely in standard collets and chucks. With a maximum drilling depth of 20.00 mm (0.7874 inch) and a flute-to-diameter ratio of 3xD, it is intended for shallow-to-moderate depth holes where rigidity and runout control matter. It is commonly used in metalworking shops, production machining, and toolroom environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e180-degree flat-bottom point eliminates the standard drill cone, enabling flat-bottomed holes\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eStub\/screw machine length body reduces deflection compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports internal coolant delivery for improved tool life and chip flushing\u003c\/li\u003e\n\u003cli\u003eTapered web configuration improves strength at the drill core\u003c\/li\u003e\n\u003cli\u003eDiameter tolerance of +0.0002 to +0.0006 inch (+0.004 to +0.016 mm) meets close-tolerance bore requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-compatible solid carbide stub drill for use in CNC machining centers, screw machines, and drill presses equipped with collets or chucks accepting a 6.00 mm straight cylindrical shank. Fits the KENNAMETAL Series B707A-FBS product family.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician familiar with carbide tooling. Ensure the machine spindle and collet or chuck are clean and free of runout before seating the shank. Solid carbide tooling is brittle and should never be used in machines with excessive spindle runout or vibration. Verify coolant-through lines are clear and delivering adequate flow before engaging the cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 5.56 mm (0.2189 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 180 degrees (flat bottom)\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 66.00 mm (2.5984 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 28.00 mm (1.1024 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.00 mm (0.2362 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36.00 mm (1.4173 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 20.00 mm (0.7874 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.25 mm (0.0099 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0002 to +0.0006 inch (+0.004 to +0.016 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B707A-FBS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6535\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.046 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 3894812\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51740820177202,"sku":"3894812","price":223.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/254f4f02828c3f53a5e4790413b1f299.jpg?v=1788827605","url":"https:\/\/voomisupply.com\/products\/kennametal-3894812-screw-machine-drill-bit-5-56mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}