{"product_id":"hertel-72401979-taper-pin-reamer-size-4-0-hss","title":"Hertel 72401979 Taper Pin Reamer Size 4\/0 Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 72401979 is a taper pin reamer designed for precision hole enlarging, finishing, and shaping in metalworking applications. Built from high-speed steel with a bright\/uncoated finish, this reamer is sized for a 4\/0 taper pin, with a small end diameter of 0.0869 inches and a large end diameter of 0.1142 inches. The spiral flute geometry with right-hand cutting direction promotes smooth chip evacuation and accurate sizing. At 2.3125 inches overall length with a 1.3125-inch flute length and a 0.125-inch square shank, it fits standard machine tool holders used in drill press, lathe, and milling setups.\u003c\/p\u003e\n\u003cp\u003eThis taper pin reamer is suited for general-purpose machine shop and maintenance work where taper pin holes must be reamed to a precise fit before pin installation. Common applications include aligning and securing mechanical assemblies such as shaft collars, gears, and linkages. The 4\/0 size is appropriate for small-diameter taper pin applications in both production and repair environments. Machinists and tool-and-die technicians working in light manufacturing, maintenance, and repair operations are the primary users of this tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-speed steel construction for general-purpose cutting performance across a range of metals\u003c\/li\u003e\n  \u003cli\u003e4\/0 taper pin size with a 1:48 taper rate for precise pin hole geometry\u003c\/li\u003e\n  \u003cli\u003e4 spiral flutes with right-hand cut for smooth chip removal and accurate sizing\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish maintains dimensional accuracy out of the box\u003c\/li\u003e\n  \u003cli\u003eSquare shank provides positive drive engagement in standard tool holders\u003c\/li\u003e\n  \u003cli\u003eCompact 2.3125-inch overall length suited for confined or close-tolerance work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard taper pin reamer for size 4\/0 taper pin holes, compatible with square-shank tool holders accepting a 0.125-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eTaper pin reamers are typically installed and operated by machinists using a drill press, lathe, or hand brace with appropriate square-shank holders. Always secure the workpiece firmly before reaming and apply a suitable cutting fluid to extend tool life and improve finish quality. Power down and de-energize any associated machinery before inspecting or replacing the reamer. Do not exceed the recommended feed rate for the workpiece material, as forcing the tool can damage the flutes or distort the tapered bore.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper Pin Size\u003c\/strong\u003e: 4\/0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 0.0869 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 0.1142 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper Rate\u003c\/strong\u003e: 1:48\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: 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\u003eFlute Length\u003c\/strong\u003e: 1.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Square\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\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 72401979\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51755568890162,"sku":"72401979","price":101.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/96c9b14c41fb3efa5b017be4db8e202a_103bc68d-aa51-42a2-8069-6c1cff8bb3a6.jpg?v=1788956212","url":"https:\/\/voomisupply.com\/products\/hertel-72401979-taper-pin-reamer-size-4-0-hss","provider":"Voomi Supply","version":"1.0","type":"link"}