{"product_id":"value-collection-557u-5-taper-pin-reamer-no-5-hss","title":"Value Collection 557u 5 Taper Pin Reamer No 5 Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 557u 5 is a No. 5 taper pin reamer designed to enlarge, finish, and shape tapered holes for taper pin applications in precision mechanical assemblies. Machined from high speed steel (HSS) with a bright, uncoated finish, it delivers reliable cutting performance across a range of materials. The reamer measures 4.3125 inches overall length with a 2.8125-inch spiral flute section and a 0.3125-inch square shank. Right-hand cutting direction pairs with left-hand spiral flutes to reduce chatter and produce a clean, accurate taper. This tool is suited for machinists, toolmakers, and maintenance technicians working with taper pin joints in shafts, hubs, and mechanical components.\u003c\/p\u003e\u003cp\u003eThis reamer is used in general-purpose machining and maintenance environments where taper pin holes must be accurately sized or refinished. Typical applications include fitting No. 5 standard taper pins in shaft collars, gear hubs, and mechanical linkages. The small end diameter of 0.2409 inches and large end diameter of 0.2994 inches conform to the standard No. 5 taper pin geometry at a 1:48 taper rate. Suitable for use in manual lathes, drill presses, or hand-held operations where a square shank driver is available.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh speed steel construction for general-purpose cutting across common workpiece materials\u003c\/li\u003e\n\u003cli\u003eSpiral flute geometry with left-hand spiral and right-hand cut reduces chatter and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eNo. 5 taper pin size with 1:48 taper rate matches standard taper pin specifications\u003c\/li\u003e\n\u003cli\u003eSquare shank provides positive drive engagement in standard taper pin reamer holders and tap wrenches\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with cutting oils and standard machining fluids\u003c\/li\u003e\n\u003cli\u003e2.8125-inch flute length accommodates full engagement depth for No. 5 taper pin holes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and general-purpose tooling option for No. 5 standard taper pin applications in manual and light CNC machining operations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis reamer is installed by machinists or maintenance technicians using a tap wrench, T-handle, or machine spindle with appropriate square-shank adapter. Secure the workpiece firmly before reaming and apply a suitable cutting oil to extend tool life and improve surface finish. Take light, consistent passes and avoid excessive feed pressure to prevent bell-mouthing or tool deflection. Follow standard shop safety practices including eye protection and proper workholding.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper Pin Size\u003c\/strong\u003e: No. 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 0.2409 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 0.2994 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper Rate\u003c\/strong\u003e: 1:48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.8125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eSeries\u003c\/strong\u003e: 557U\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 557u 5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709072212274,"sku":"557u 5","price":109.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aa40be6a7a2130a64e81e4588e6292a3.jpg?v=1788450829","url":"https:\/\/voomisupply.com\/products\/value-collection-557u-5-taper-pin-reamer-no-5-hss","provider":"Voomi Supply","version":"1.0","type":"link"}