{"product_id":"harvey-tool-54210-c3-thread-mill-4-40-to-4-48-solid-carbide","title":"Harvey Tool 54210-C3 Thread Mill 4-40 to 4-48 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 54210-C3 is a single profile thread mill designed to cut both internal and external threads in the number 4 thread size range, covering 40 to 48 threads per inch (TPI). Built from solid carbide and coated with AlTiN for heat and wear resistance, this tool is suited for precision threading in hardened and abrasive materials. With a cutting diameter of 0.08 inches, a neck diameter of 0.04 inches, and a 2-flute geometry, it delivers controlled chip evacuation in tight threading applications. Machinists and CNC programmers in aerospace, medical device, and precision machining shops rely on single profile thread mills like this one for flexibility across multiple thread pitches with a single tool.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is intended for use in CNC machining centers capable of helical interpolation. It covers the number 4-40 to number 4-48 thread range, making it useful where both coarse and fine pitch threads in the number 4 size must be produced without a tool change. The short neck length of 0.375 inches keeps the tool rigid close to the workpiece, which reduces deflection in small-diameter threading operations. Typical applications include threading small fastener holes in aluminum, stainless steel, titanium, and other materials where tap breakage is a concern.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCovers 40 to 48 TPI in the number 4 thread size — one tool handles both 4-40 and 4-48 in a single setup\u003c\/li\u003e\n  \u003cli\u003eCuts internal and external threads using CNC helical interpolation\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and dimensional stability in demanding materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating improves heat resistance and extends tool life in ferrous and high-temperature alloys\u003c\/li\u003e\n  \u003cli\u003e2-flute design promotes chip clearance in small-diameter, deep-reach threading\u003c\/li\u003e\n  \u003cli\u003eReduced neck diameter of 0.04 inches allows reach into counterbored or stepped hole features\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers with helical interpolation capability. Accepts standard 3\/16-inch collet or toolholder systems. Compatible with internal and external threading operations in the number 4-40 to number 4-48 thread range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool must be run in a CNC machine programmed for helical interpolation — it is not a hand tap and cannot be used in a drill press or manual setup. Secure the 3\/16-inch shank in a precision collet or shrink-fit holder to minimize runout, which is critical at this cutting diameter. Verify spindle speeds, feed rates, and coolant strategy against the manufacturer's published speeds and feeds for the workpiece material before cutting. Inspect the neck and cutting edge for chipping before each use, as solid carbide tools at this diameter are sensitive to improper handling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size Range\u003c\/strong\u003e: 4-40 to 4-48\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch (TPI)\u003c\/strong\u003e: 40 minimum, 48 maximum\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: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.08 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.04 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2 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: 0.4 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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 54210-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51755922194738,"sku":"54210-C3","price":163.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0cde1d1fec4922d086c1506b93d42cb1_4feb709d-e53b-4c8c-96f4-d57569fe1921.jpg?v=1788961632","url":"https:\/\/voomisupply.com\/products\/harvey-tool-54210-c3-thread-mill-4-40-to-4-48-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}