{"product_id":"osg-257-2280-combo-drill-reamer-0-228-in-solid-carbide","title":"Osg 257-2280 Combo Drill Reamer 0.228 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 257-2280 is a solid carbide combo drill reamer designed for combined drilling and reaming operations in a single pass. With a reamer diameter of 0.228 inches and a flute length of 2.239 inches, it delivers precise hole sizing and surface finish in one tool. The bright uncoated finish suits a wide range of base materials where coating adhesion is not required. At 4 inches overall length and 0.07 pounds, it is compact enough for tight setups while providing adequate reach for typical through-hole and blind-hole applications. Machinists and toolroom technicians use this type of combination tool to reduce cycle time and eliminate a separate reaming operation.\u003c\/p\u003e\n\u003cp\u003eThis combo drill reamer is suited for precision machining environments where hole tolerance and finish quality are critical. It fits CNC machining centers, drill presses, and manual mills using a cylindrical shank mount. The 0.228-inch cylindrical shank diameter allows direct installation into standard collets or chuck systems. Applications include production runs and prototype work in metalworking shops requiring tight hole diameter control. Right-hand cutting direction is standard for conventional spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in precision hole finishing\u003c\/li\u003e\n  \u003cli\u003e0.228 inch reamer diameter for accurate final hole sizing\u003c\/li\u003e\n  \u003cli\u003e2.239 inch flute length provides sufficient chip clearance and cutting engagement\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish compatible with a broad range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction for use with standard spindle rotation\u003c\/li\u003e\n  \u003cli\u003eCylindrical shank at 0.4375 inches fits common collet and chuck systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit tool for CNC and manual machining setups requiring a cylindrical-shank combo drill reamer in the 0.228-inch diameter class.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist familiar with cutting tool mounting procedures. Ensure the spindle is fully stopped and locked before inserting or removing the tool from the collet or chuck. Verify runout with a dial indicator after mounting to confirm concentricity before cutting. Follow shop safety protocols and applicable OSHA machine guarding requirements during setup and operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 0.228 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.239 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Cylindrical\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\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 4.1 inches L x 0.45 inches W x 0.35 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\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: 257-2280\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51737767706930,"sku":"257-2280","price":213.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f8dcce89f7dec84dae7745206904c537_89614379-0eb6-4797-93c3-a20287d9e00a.jpg?v=1788793352","url":"https:\/\/voomisupply.com\/products\/osg-257-2280-combo-drill-reamer-0-228-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}