{"product_id":"cleveland-c24259-taper-pin-reamer-no-4-hss-6-flute","title":"Cleveland C24259 Taper Pin Reamer No. 4 Hss 6 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C24259 is a No. 4 taper pin reamer designed to size and finish tapered holes to accept No. 4 taper pins. Manufactured from high-speed steel (HSS), it delivers the hardness and wear resistance needed for general-purpose reaming in ferrous materials. The reamer features a straight flute geometry with 6 flutes, a small end diameter of 0.2071 inches, and a large end diameter of 0.2604 inches. Overall length is 4.0625 inches with a flute length of 2.5625 inches. This tool is installed and used by machinists, maintenance technicians, and tool-room professionals performing precision hole finishing operations.\u003c\/p\u003e\u003cp\u003eThis reamer is suited for use on cast iron, carbon steel, and alloy steel workpieces in both production and maintenance environments. Typical applications include enlarging and finishing tapered holes in shafts, hubs, levers, and mechanical assemblies where taper pins are used for positive location or locking. The 1:48 taper rate matches the standard taper pin specification, ensuring proper fit when used with corresponding taper pins. A 17\/64-inch square shank provides positive drive engagement in standard reamer holders and tap wrenches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-speed steel construction for hardness and wear resistance in ferrous materials\u003c\/li\u003e\n\u003cli\u003e6 straight flutes for consistent chip evacuation and smooth surface finish\u003c\/li\u003e\n\u003cli\u003e1:48 taper rate matches standard No. 4 taper pin specification\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for general-purpose applications\u003c\/li\u003e\n\u003cli\u003e17\/64-inch square shank for positive drive in standard holders\u003c\/li\u003e\n\u003cli\u003eRight-hand cut geometry for conventional reaming operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use reamer for No. 4 taper pin applications in standard taper pin hole finishing. Compatible workpiece materials include cast iron, steel, and steel alloy per CLEVELAND Series 657 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTaper pin reamers are used by machinists and maintenance technicians using manual tap wrenches or low-speed machine spindles. Secure the workpiece fully before reaming and apply appropriate cutting fluid to extend tool life and improve surface finish in steel and cast iron. Use progressive passes to approach final size; avoid forcing the reamer, which can deflect the tool or damage the workpiece surface. Confirm hole size with the corresponding taper pin gauge before driving the final pin.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper Pin Size\u003c\/strong\u003e: No. 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 0.2071 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 0.2604 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.0625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2656 inches (17\/64 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\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\u003eTaper Rate\u003c\/strong\u003e: 1:48\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: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel, Steel Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 657\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CLEVELAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C24259\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51722771104050,"sku":"C24259","price":93.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7811ab8732f343177a4f8ae56a61caea.jpg?v=1788595662","url":"https:\/\/voomisupply.com\/products\/cleveland-c24259-taper-pin-reamer-no-4-hss-6-flute","provider":"Voomi Supply","version":"1.0","type":"link"}