{"product_id":"harvey-tool-41450-c3-thread-mill-1-4-20-to-1-4-56-4-flute-carbide","title":"Harvey Tool 41450-C3 Thread Mill 1\/4-20 to 1\/4-56 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HARVEY TOOL 41450-C3 is a solid carbide single profile thread mill designed to cut internal and external threads ranging from 1\/4-20 to 1\/4-56, covering 20 to 56 TPI. With a cutting diameter of 0.18 inches and a 1\/4-inch shank, this tool is built for precision threading in a CNC machining center environment. The AlTiN coating provides heat resistance and extended tool life in ferrous and hard alloy materials. Four flutes deliver efficient chip evacuation and smooth thread form across the full TPI range supported by this tool.\u003c\/p\u003e\u003cp\u003eThis thread mill is suited for job shops, production machining, and toolroom applications where a single tool must cover multiple thread pitches in the 1\/4-inch thread size family. Internal threading in blind holes and through-holes, as well as external thread milling on turned or milled features, are both supported. The 0.75-inch neck length and 2.5-inch overall length allow reach into moderate-depth bores without excessive overhang.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCovers 1\/4-20 to 1\/4-56 thread range with a single tool, reducing tooling inventory\u003c\/li\u003e\n\u003cli\u003eAlTiN coating for heat resistance and extended tool life in ferrous and hard materials\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for rigidity and dimensional accuracy\u003c\/li\u003e\n\u003cli\u003e4-flute design promotes chip evacuation and surface finish quality\u003c\/li\u003e\n\u003cli\u003eCuts both internal and external threads, eliminating the need for separate tools\u003c\/li\u003e\n\u003cli\u003e0.115-inch neck diameter provides clearance in confined bore entries\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers with a 1\/4-inch collet or end mill holder; suitable for thread milling 1\/4-inch internal and external thread forms across the 20 to 56 TPI range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread mills require a CNC machining center capable of helical interpolation; manual or conventional milling machines are not suitable. Ensure the tool holder is properly torqued and the tool is seated fully in the collet before operation. Verify CNC program thread direction, pitch, and helix offset match the required thread specification before cutting. A licensed machinist or CNC programmer should confirm feeds, speeds, and toolpath parameters prior to production use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size Range\u003c\/strong\u003e: 1\/4-20 to 1\/4-56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch (TPI)\u003c\/strong\u003e: 20 to 56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.115 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: HARVEY TOOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 41450-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51753461580082,"sku":"41450-C3","price":163.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0cde1d1fec4922d086c1506b93d42cb1_4abd4562-4295-4a5c-8086-b2bdef4cdc0d.jpg?v=1788937051","url":"https:\/\/voomisupply.com\/products\/harvey-tool-41450-c3-thread-mill-1-4-20-to-1-4-56-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}