{"product_id":"harvey-tool-987176-c3-thread-mill-7-16-20-internal-solid-carbide","title":"Harvey Tool 987176-C3 Thread Mill 7\/16-20 Internal Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 987176-C3 is a solid carbide helical flute thread mill designed for cutting internal 7\/16-20 UNF threads in a milling operation. With 4 flutes and an AlTiN coating, it delivers efficient material removal and extended tool life in ferrous and hardened materials. The cutting diameter measures 0.3500 inches, the length of cut is 1.3000 inches, and the 3\/8-inch (0.3750-inch) shank fits standard ER or end mill holders. Thread milling produces accurate, single-point-equivalent thread profiles while reducing tool pressure compared to tapping, making it a preferred method for precision machining environments.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for CNC machining centers performing internal threading operations on ferrous alloys, stainless steel, hardened steel, and similar materials where thread quality and tool life are critical. At 20 TPI with a 7\/16-inch minimum nominal diameter, it covers standard 7\/16-20 UNF fastener thread applications in production and job-shop environments. The overall length of 3.5000 inches provides adequate reach for typical blind and through-hole applications encountered in aerospace, automotive, and general precision machining work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in demanding materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating improves heat resistance and extends tool life in ferrous and hardened workpieces\u003c\/li\u003e\n  \u003cli\u003e4-flute helical design for smooth cutting action and efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCuts internal 7\/16-20 UNF threads at 20 TPI\u003c\/li\u003e\n  \u003cli\u003e0.3500-inch cutting diameter with 1.3000-inch length of cut for adequate thread engagement depth\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank diameter compatible with common ER collet and end mill toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for CNC machining centers requiring internal 7\/16-20 UNF thread milling capability with a 3\/8-inch shank interface.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by a qualified CNC machinist or toolroom professional. Secure the shank firmly in a balanced, runout-minimized toolholder before programming the helical interpolation toolpath. Verify spindle speed and feed rate parameters against the workpiece material and cutting conditions before engaging the cut. Do not use this tool for tapping operations; it is designed exclusively for CNC thread milling with helical interpolation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-20\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 (TPI)\u003c\/strong\u003e: 20\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: 0.3500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3750 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.3000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN\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: 0.2 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: 987176-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51728328851762,"sku":"987176-C3","price":452.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cd14ea8e8bcad397794240293203429.jpg?v=1788690488","url":"https:\/\/voomisupply.com\/products\/harvey-tool-987176-c3-thread-mill-7-16-20-internal-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}