{"product_id":"osg-8595404-screw-machine-drill-bit-0-159-in-hss","title":"Osg 8595404 Screw Machine Drill Bit 0.159 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 8595404 is a screw machine length drill bit designed for high-performance metal drilling in production and shop environments. Built from high speed steel (HSS) with a coated finish, this bit runs a 120-degree faceted point angle and a web-thinned, tapered web configuration that reduces entry force and improves chip clearance. At 0.159 inches (Wire Size 21) in diameter, it is sized for tight-tolerance work in steel, stainless steel, aluminum, and aluminum alloys. The straight-cylindrical shank and two-flute spiral design make it compatible with standard drill chucks and CNC toolholders. Installation and use are handled by machinists, tool and die makers, and maintenance technicians.\u003c\/p\u003e\n\u003cp\u003eThe OSG 8595404 belongs to the OSG Series 1100 and is intended for use in screw machine operations, production drilling, and general-purpose hole-making in metalworking environments. Its 5xD flute-to-diameter ratio suits short, rigid setups typical of screw machines and drill presses. Workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Right-hand cutting direction is standard for conventional spindle rotation. This bit fits both manual and CNC drilling applications where short-length, high-rigidity tooling is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire Size 21 (0.159 inches diameter) with a tolerance of +0 to -0.0007 inches for precise hole sizing\u003c\/li\u003e\n  \u003cli\u003e120-degree faceted point angle with web thinning for reduced thrust and cleaner entry\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended tool life in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eTwo-flute spiral design with tapered web for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank (6 mm) fits standard drill chucks and collet holders\u003c\/li\u003e\n  \u003cli\u003eScrew machine length (overall length 66 mm) provides rigidity in tight-clearance setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard drill presses, screw machines, and CNC machining centers equipped with a straight-shank toolholder or drill chuck accepting a 6 mm shank diameter. Suitable for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove drill bits only with the machine powered off and the spindle fully stopped. Secure the straight-cylindrical shank firmly in a properly sized chuck or collet to prevent runout. Inspect the cutting edges and point geometry before use and replace bits showing chipping or dulling to maintain hole tolerance. Follow applicable shop safety practices and machine manufacturer guidelines for speeds and feeds appropriate to the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 21\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1590 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (mm)\u003c\/strong\u003e: 4.04 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 120 degrees\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 22 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 66 mm (approximately 2.6 inches)\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: 6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0 to -0.018 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Stainless Steel, Aluminum, Aluminum Alloy, Aluminum Silicate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 pounds\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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8595404\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51753760194866,"sku":"8595404","price":54.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e7ef04a1bcfa294f521f63ab42e8c431.jpg?v=1788940395","url":"https:\/\/voomisupply.com\/products\/osg-8595404-screw-machine-drill-bit-0-159-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}