{"product_id":"osg-220-1378-solid-carbide-jobber-drill-bit-3-5-mm","title":"Osg 220-1378 Solid Carbide Jobber Drill Bit 3.5 Mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 220-1378 is a solid carbide jobber-length drill bit designed for general-purpose drilling in metalworking applications. It features a 3.5 mm diameter with a 118-degree web-thinned point that reduces thrust and improves self-centering at entry. The straight-cylindrical shank seats securely in standard drill chucks and collets. Overall length is 64 mm with a 35 mm flute length, and the bright uncoated finish keeps the carbide substrate exposed for direct inspection. Two spiral flutes in a regular helix evacuate chips efficiently during through and blind-hole operations. Machinists and tool-and-die professionals specify this bit when tight diameter tolerance is required — the ground tolerance holds within plus 0 to minus 0.013 mm.\u003c\/p\u003e\u003cp\u003eThe OSG 220-1378 is suited for drilling steel, alloy steel, stainless steel, cast iron, aluminum, aluminum alloy, and aluminum silicate workpieces. Typical applications include blind hole drilling, cross-hole drilling, standard through-drilling, and self-centering starts without a pilot hole. The bit performs in CNC machining centers, drill presses, and manual machines where a jobber-length reach covers most common workpiece depths without sacrificing rigidity. It is sold individually and is appropriate for both production shop floors and maintenance repair operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction provides hardness and wear resistance across a wide range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered-web point geometry reduces entry thrust and supports self-centering\u003c\/li\u003e\n\u003cli\u003e118-degree point angle suits general-purpose drilling in ferrous and non-ferrous metals\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish allows visual inspection of cutting edge condition\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flutes with regular helix promote consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eDiameter tolerance held to plus 0 to minus 0.013 mm for precision fit requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style general-purpose jobber drill bit for use in standard straight-shank drill chucks and collet systems accepting 3.5 mm shank diameters.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by a machinist or toolroom technician in any drill chuck or collet rated for 3.5 mm straight-cylindrical shanks. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Verify proper seating depth and runout before beginning a cut. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling stainless steel, alloy steel, or cast iron to manage heat buildup at the cutting edge.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3.5 mm (0.1378 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 64 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 35 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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: Spiral, Regular Helix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: plus 0 to minus 0.013 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Alloy Steel, Stainless Steel, Cast Iron, Aluminum, Aluminum Alloy, Aluminum Silicate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Blind Hole, Cross Hole, Drilling, Self-Centering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 220D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.095 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 220-1378\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744926171442,"sku":"220-1378","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b4a25cb6fca78423402be763ec42128e_099c354d-7bc4-426c-a130-41e81f992b29.jpg?v=1788862307","url":"https:\/\/voomisupply.com\/products\/osg-220-1378-solid-carbide-jobber-drill-bit-3-5-mm","provider":"Voomi Supply","version":"1.0","type":"link"}