{"product_id":"harvey-tool-901250-c3-thread-mill-1-4-20-to-1-4-56-4-flute-carbide","title":"Harvey Tool 901250-C3 Thread Mill 1\/4-20 to 1\/4-56 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 901250-C3 is a solid carbide single profile thread mill designed to cut both internal and external threads ranging from 1\/4-20 to 1\/4-56, covering 20 to 56 TPI in a single tool. With a 0.18-inch cutting diameter, a 0.115-inch neck diameter, and a 1.5-inch neck length, this tool is built for threading operations in confined bores and tight-clearance features. The AlTiN coating improves heat resistance and extends tool life in ferrous and hardened materials. Four flutes provide efficient chip evacuation and a stable cutting action. At 3 inches overall length with a 1\/4-inch shank, it mounts directly in standard CNC toolholders.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for CNC machining centers performing precision threading on ferrous metals, stainless steels, aluminum, and hardened materials where tap breakage is a concern. Single profile thread mills like the 901250-C3 are commonly used in job shops and production environments when one tool must handle multiple thread pitches or when thread milling is preferred over tapping for process control. The 1\/4-inch shank fits ER collet chucks, end mill holders, and shrink-fit tooling commonly found in vertical and horizontal machining centers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts internal and external threads from 20 to 56 TPI with a single tool\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating for extended tool life in high-temperature cutting conditions\u003c\/li\u003e\n  \u003cli\u003e0.115-inch neck diameter allows access to small-bore and deep-thread applications\u003c\/li\u003e\n  \u003cli\u003e4-flute geometry promotes chip evacuation and surface finish consistency\u003c\/li\u003e\n  \u003cli\u003e3-inch overall length with 1\/4-inch shank for compatibility with standard CNC toolholding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers with standard 1\/4-inch shank toolholders including ER collet systems and end mill holders. Suitable for threading operations covering the 1\/4-20 through 1\/4-56 thread size range on internal and external features.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by a qualified CNC machinist or tooling specialist. Secure the shank fully in a balanced, runout-minimized toolholder before use. Thread milling requires helical interpolation programmed at the CNC control  -  verify G-code and pitch values match the intended thread specification before cutting. Inspect the AlTiN coating and cutting edges for wear or chipping before each use; do not run a damaged tool.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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) Range\u003c\/strong\u003e: 20 to 56 TPI\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\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\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: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: 901250-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51743423463730,"sku":"901250-C3","price":191.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0cde1d1fec4922d086c1506b93d42cb1_d43ccedf-c6eb-4055-bf73-8d985f92fd71.jpg?v=1788846884","url":"https:\/\/voomisupply.com\/products\/harvey-tool-901250-c3-thread-mill-1-4-20-to-1-4-56-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}