{"product_id":"scientific-cutting-tools-tm-400-28h-thread-mill-1-2-28-4-flute","title":"Scientific Cutting Tools Tm 400-28H Thread Mill 1\/2-28 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TM 400-28H is a solid carbide helical flute thread mill designed to cut 1\/2-28 UNEF threads in both internal and external applications. Built from submicron-grade carbide, this tool delivers precise thread geometry with 28 teeth per inch and a 0.4-inch cutting diameter. The four right-hand helical flutes provide clean chip evacuation and consistent surface finish in a single helical pass. It is a production-grade tool suited for CNC machining centers running tight-tolerance threading operations across ferrous and non-ferrous workpiece materials.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is applied in shops producing components that require 1\/2-28 UNEF threads, a fine-pitch unified thread standard common in instrumentation, firearms components, and precision mechanical assemblies. The tool handles both internal bores and external diameters, reducing the need for multiple tooling setups. A bright, uncoated finish makes it well-suited for applications where coating interaction with the workpiece material is a concern, or where regrinding is planned after service life.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts 1\/2-28 UNEF internal and external threads in a single tool\u003c\/li\u003e\n  \u003cli\u003eSubmicron-grade solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eFour right-hand helical flutes for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003e0.4-inch cutting diameter with 1.0-inch length of cut\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish suitable for regrinding and chemically sensitive materials\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design  -  compatible with flood or mist coolant delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style thread milling solution for CNC machining centers capable of helical interpolation, suitable for producing 1\/2-28 UNEF threads in both internal and external configurations with a minimum nominal diameter of 0.5 inches.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread mills of this type are installed by machinists and CNC programmers in a standard end mill holder or collet chuck sized for a 0.5-inch shank. Verify spindle runout is within acceptable limits before operation, as excessive runout accelerates edge wear and degrades thread accuracy. The machine control must support helical interpolation (G02\/G03 with Z-axis lead) to execute the thread milling cycle correctly. Always confirm workpiece is securely fixtured and the tool path pitch matches the 28 TPI specification before cutting.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNEF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Submicron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TM 400-28H\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52025611551026,"sku":"TM 400-28H","price":305.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/278c7d445eb88c7fc483200c4414d5dc.jpg?v=1790015690","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tm-400-28h-thread-mill-1-2-28-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}