{"product_id":"accupro-930-00440-thread-mill-4-40-internal-2-flute-solid-carbide","title":"Accupro 930-00440 Thread Mill 4-40 Internal 2 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 930-00440 is a solid carbide helical flute thread mill designed for cutting internal 4-40 UNC threads. It runs 2 flutes with a 0.1000 inch cutting diameter and a 0.2500 inch length of cut, making it suited for small-diameter internal thread milling in precision machining environments. The micrograin carbide substrate and TiAlN coating provide wear resistance and thermal stability at elevated cutting speeds. This tool is installed by CNC machinists and tool-and-die professionals working on tight-tolerance components where tapped holes are not practical or where thread milling is the preferred process.\u003c\/p\u003e\u003cp\u003eThis thread mill is used in production and job-shop environments for generating 4-40 UNC internal threads on machining centers. It is applicable to aluminum, steel, stainless, and hardened alloy workpieces where micrograin carbide and TiAlN coating provide the necessary edge retention. The 1\/4 inch shank diameter fits standard ER collet chucks and shrink-fit holders commonly found on vertical and horizontal machining centers. It is suited for both through-hole and blind-hole applications within its length-of-cut range.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid micrograin carbide construction for rigidity and edge retention in small-diameter thread milling\u003c\/li\u003e\n\u003cli\u003eTiAlN coating improves heat resistance and extends tool life in ferrous and hardened materials\u003c\/li\u003e\n\u003cli\u003e4-40 UNC thread form, 40 TPI, internal configuration\u003c\/li\u003e\n\u003cli\u003e0.1000 inch cutting diameter with 0.2500 inch length of cut\u003c\/li\u003e\n\u003cli\u003e2-flute helical geometry promotes chip evacuation in confined bore profiles\u003c\/li\u003e\n\u003cli\u003eNo coolant-through design; suitable for external flood or mist coolant application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use on CNC machining centers capable of helical interpolation; accepts standard 1\/4 inch shank toolholders including ER collet chucks and shrink-fit holders. Generates 4-40 UNC internal threads per the stated thread standard.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread milling requires a CNC control capable of helical interpolation; verify control compatibility before programming. Secure the shank in a balanced, low-runout toolholder and confirm runout is within acceptable tolerance before cutting. Use appropriate flood or mist coolant directed at the cutting zone. Follow shop-specific speeds and feeds for the workpiece material and do not exceed the tool diameter or length-of-cut ratings stated by the manufacturer.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 40 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.1000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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: Micrograin\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: 0.5 pounds\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: 930-00440\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51746300920114,"sku":"930-00440","price":262.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/06412484b1332cc429568547e10ef2c8.jpg?v=1788868119","url":"https:\/\/voomisupply.com\/products\/accupro-930-00440-thread-mill-4-40-internal-2-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}