{"product_id":"accupro-c931-45750-thread-mill-internal-3-flute-solid-carbide","title":"Accupro C931-45750 Thread Mill Internal 3 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO C931-45750 is an internal helical flute thread mill designed for cutting M4.5 x 0.75 metric coarse threads in a single helical pass. Built from micrograin solid carbide and finished with a TiAlN coating, this tool delivers heat resistance and edge retention at elevated cutting speeds. The 3-flute right-hand design produces clean internal thread profiles with reduced cycle time compared to single-point threading. With a 0.12 inch cutting diameter and 0.25 inch length of cut, it is suited for small-bore threading operations in precision machining environments. Machinists and tool and die professionals working in production or prototype settings are the primary users.\u003c\/p\u003e\u003cp\u003eThis thread mill is intended for internal threading applications on machining centers and CNC mills capable of helical interpolation. It targets M4.5 x 0.75 metric coarse thread forms in ferrous and non-ferrous workpiece materials where tight tolerances are required. The TiAlN coating supports use in harder materials and higher-speed dry or semi-dry cutting conditions. The 1\/8 inch shank diameter fits standard collet and end mill holders common in small-part machining setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide substrate for rigidity and wear resistance in small-diameter threading\u003c\/li\u003e\n\u003cli\u003eTiAlN coating provides thermal barrier for elevated cutting speeds and extended tool life\u003c\/li\u003e\n\u003cli\u003e3 right-hand flutes for efficient chip evacuation in blind and through-hole internal threading\u003c\/li\u003e\n\u003cli\u003eHelical flute geometry allows full M4.5 x 0.75 thread profile in one interpolated pass\u003c\/li\u003e\n\u003cli\u003e0.75 mm pitch matches metric coarse thread standard for M4.5 fastener applications\u003c\/li\u003e\n\u003cli\u003eNo coolant-through requirement simplifies setup on standard machining centers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard production thread mill for internal M4.5 x 0.75 metric coarse threading operations on CNC machining centers with helical interpolation capability.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists using a compatible collet or end mill holder sized for a 1\/8 inch shank. Confirm machine spindle and tool holder runout are within acceptable limits before threading operations, as runout directly affects thread quality at this diameter. Program helical interpolation to match the 0.75 mm pitch and verify minimum bore diameter clears the 0.12 inch cutting diameter before engaging the workpiece. Always inspect the cutting edge for wear or chipping before each use; carbide tools at this scale are sensitive to improper seating and side-loading.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\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: Metric Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M4.5 x 0.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: 0.75 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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: 0.12 inches (3.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (3.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 0.1772 inches (4.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 63.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Micrograin Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\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: 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C931-45750\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51735240868146,"sku":"C931-45750","price":171.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8a468a5d2ef8a3e850f80eee3e3f6e1a.jpg?v=1788770774","url":"https:\/\/voomisupply.com\/products\/accupro-c931-45750-thread-mill-internal-3-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}