{"product_id":"scientific-cutting-tools-tm345-28a-thread-mill-7-16-28","title":"Scientific Cutting Tools TM345-28A Thread Mill 7\/16-28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TM345-28A is a straight flute internal thread mill designed for cutting 7\/16-28 UNEF threads in a single helical pass. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, this tool handles the heat and abrasion demands of production threading in ferrous and non-ferrous materials. With 4 flutes, a 0.345-inch cutting diameter, and a 0.8-inch length of cut, it is sized for typical fastener and instrument-thread applications where fine-pitch internal threads are required. Machinists and toolroom professionals on CNC machining centers are the primary users of this tool.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for internal UNEF threading operations on machining centers running helical interpolation cycles. The 3\/8-inch shank diameter fits standard ER and shrink-fit toolholders common in CNC mill setups. A 3.5-inch overall length provides clearance for moderate-depth bores without requiring an extended-reach variant. The straight flute geometry and 28 TPI pitch make this tool appropriate for fine-thread applications in aerospace, hydraulic fittings, instrumentation, and precision mechanical assemblies where UNEF thread callouts are specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/16-28 UNEF internal thread form, 28 teeth per inch\u003c\/li\u003e\n  \u003cli\u003eSubmicron-grade solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eAlTiN+ coating for elevated heat resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e4 straight flutes with 0.345-inch cutting diameter\u003c\/li\u003e\n  \u003cli\u003e0.8-inch length of cut suits typical shallow-to-moderate bore depths\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank diameter compatible with standard CNC toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers capable of helical interpolation for cutting 7\/16-28 UNEF internal threads. The 3\/8-inch shank fits standard ER collet chucks and shrink-fit holders sized for that diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation of this thread mill should be performed by a qualified machinist or CNC programmer familiar with helical interpolation threading cycles. Secure the shank fully in a balanced, runout-tested toolholder before use, and verify spindle RPM and feed rate against the manufacturer's recommended cutting data for the workpiece material. Ensure the machine tool is at a complete stop and the spindle is locked before changing or inspecting the tool. Do not use this tool in a manual mill or drill press, as helical interpolation requires coordinated CNC axis control.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNEF\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\u003eCutting Diameter\u003c\/strong\u003e: 0.345 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide (Submicron Grade)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN+\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStaggered Tooth\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 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: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TM345-28A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":51999776833842,"sku":"TM345-28A","price":255.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c25ef0a1e99595c31a66504e79990d92.jpg?v=1789995875","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tm345-28a-thread-mill-7-16-28","provider":"Voomi Supply","version":"1.0","type":"link"}