{"product_id":"osg-8706400-extra-length-solid-carbide-drill-bit-4mm","title":"Osg 8706400 Extra Length Solid Carbide Drill Bit 4mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 8706400 is a solid carbide extra length drill bit designed for high-precision drilling in demanding industrial and metalworking applications. Built to Series 6540 specifications, this bit measures 4.00 mm (0.1575 inches) in diameter with an overall length of 140 mm and a flute length of 90 mm, giving it a 15xD flute-to-diameter ratio suited for deep-hole drilling. The 140-degree drill point angle and X-Thinned web geometry reduce thrust force and improve chip evacuation. The EgiAs coating enhances surface hardness and wear resistance, extending tool life in abrasive and hard materials. Coolant-through capability supports high-speed operations where heat management is critical.\u003c\/p\u003e\u003cp\u003eThis drill bit is used in precision machining environments where extended reach and tight tolerances are required. Typical applications include deep-hole drilling in steel, stainless steel, cast iron, and similar ferrous materials. The straight-cylindrical shank seats directly in standard drill chucks and collet systems without adapters. Right-hand cutting direction makes it compatible with conventional CNC machining centers, drill presses, and multi-axis lathes. It is installed and operated by machinists and CNC technicians in job shops, aerospace component manufacturing, and general metalworking facilities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and heat resistance for deep-hole drilling\u003c\/li\u003e\n\u003cli\u003eEgiAs coating improves wear resistance and reduces surface friction during cutting\u003c\/li\u003e\n\u003cli\u003e140-degree drill point angle reduces thrust and improves centering accuracy\u003c\/li\u003e\n\u003cli\u003eX-Thinned web minimizes cutting resistance and improves chip flow\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports high-feed, high-speed drilling cycles\u003c\/li\u003e\n\u003cli\u003e15xD flute-to-diameter ratio enables extended reach in deep-hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and production drill bit for use in standard straight-cylindrical collet chucks and drill chucks accepting 4.00 mm shank diameters in CNC and manual drilling applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the bit. Seat the straight-cylindrical shank fully into the collet or chuck and verify runout before beginning a cutting cycle. When using coolant-through capability, confirm coolant pressure and flow rate are within the machine tool specifications before operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 4.00 mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 140 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 90 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 15xD\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: EgiAs\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: 4.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: X-Thinned\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: 6540\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 5.55 x 0.55 x 0.4 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8706400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51747510059314,"sku":"8706400","price":595.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3fb5c0c3dd8b29b6bec8c30553aa0e01_ade51785-b588-4922-8b7d-a804f8eff9d2.jpg?v=1788881595","url":"https:\/\/voomisupply.com\/products\/osg-8706400-extra-length-solid-carbide-drill-bit-4mm","provider":"Voomi Supply","version":"1.0","type":"link"}