{"product_id":"osg-300-1590-chucking-reamer-wire-size-21-solid-carbide","title":"Osg 300-1590 Chucking Reamer Wire Size 21 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 300-1590 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. With a reamer diameter of 0.1590 inches (Wire Size 21) and a tight diameter tolerance of +0.0001 to +0.0004 inches, this tool delivers accurate, repeatable hole sizing in production and job-shop environments. The straight flute geometry and right-hand cutting direction make it well suited for through-holes and short blind-hole applications in ferrous and non-ferrous materials. It is installed and operated by machinists and CNC operators using standard drill chucks or collet holders.\u003c\/p\u003e\u003cp\u003eThis reamer is intended for general machining applications requiring close-tolerance hole finishing in the 0.1500 to 0.1999 inch diameter range. The straight cylindrical shank allows direct chucking in conventional drill chucks, collet chucks, or floating reamer holders. With an overall length of 2.5 inches and a flute length of 0.75 inches, this tool is sized for compact workpieces and short-reach operations on manual mills, drill presses, and CNC machining centers. No coolant-through capability is present, so flood or mist coolant applied externally is recommended for best tool life.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and extended tool life in abrasive or hard materials\u003c\/li\u003e\n\u003cli\u003eReamer diameter of 0.1590 inches (Wire Size 21) with tolerance of +0.0001 to +0.0004 inches\u003c\/li\u003e\n\u003cli\u003eFour straight flutes for smooth cutting action and consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish suitable for a broad range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank for direct chucking without adapters\u003c\/li\u003e\n\u003cli\u003ePart of the OSG 300D series, designed as a standard carbide reamer for general machining\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard solid carbide chucking reamer for general machining applications requiring hole finishing in the 0.1500 to 0.1999 inch decimal inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis reamer is installed by machinists and CNC operators; ensure the machine spindle is fully stopped and the workpiece is securely fixtured before tool changes. Chuck the straight cylindrical shank concentrically in a drill chuck, ER collet, or floating holder to minimize runout and protect the tight diameter tolerance. Pre-drill or bore the hole close to finished size before reaming, as chucking reamers are finishing tools and are not designed to remove heavy stock. Apply external flood or mist coolant to extend tool life, as this tool does not have coolant-through capability.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 0.1590 inches (Wire Size 21)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.1500 to 0.1999 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0001 to +0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\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\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 300D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 300-1590\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727245607218,"sku":"300-1590","price":55.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b3af7ad9693a92dc89007783f5a05a9f_babc8736-a375-4c76-9973-5a4c2d694a7c.jpg?v=1788675335","url":"https:\/\/voomisupply.com\/products\/osg-300-1590-chucking-reamer-wire-size-21-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}