{"product_id":"harvey-tool-70076-c3-helical-flute-thread-mill-7-16-20","title":"Harvey Tool 70076-C3 Helical Flute Thread Mill 7\/16-20","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 70076-C3 is a solid carbide helical flute thread mill designed for cutting 7\/16-20 UNF threads in both internal and external applications. With 4 flutes and an AlTiN coating, it delivers efficient chip evacuation and extended tool life in ferrous and hardened materials. The 0.3350-inch cutting diameter and 0.8750-inch length of cut give machinists precise control over thread depth and engagement. At 3.5 inches overall length with a 3\/8-inch shank, it mounts securely in standard milling chucks and collet holders. This tool is intended for use by CNC machinists and toolroom professionals working in production or job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for machining centers and CNC milling equipment performing thread milling operations on 7\/16-20 threaded features. It handles both internal bores and external thread profiles from a single tool, reducing setup time when both thread types appear on the same workpiece. The minimum nominal diameter of 0.4375 inches defines the smallest bore into which this tool can be interpolated. Typical applications include precision component manufacturing in aerospace, automotive, and general metalworking where thread quality and repeatability are critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts 7\/16-20 UNF internal and external threads from a single tool\u003c\/li\u003e\n  \u003cli\u003e4-flute helical design promotes efficient chip evacuation and smooth cutting action\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating improves heat resistance and extends tool life in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and dimensional stability under load\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank diameter fits standard collet chucks and milling tool holders\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design simplifies setup on standard machining centers\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. Compatible with standard 3\/8-inch collet chucks and milling holders. Minimum nominal bore diameter for internal thread milling is 0.4375 inches.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool must be installed in a CNC machining center programmed for helical interpolation; thread milling cannot be performed on a conventional manual mill without CNC control. Ensure the tool holder is properly torqued and runout is minimized before cutting, as excessive runout will degrade thread quality. Verify the CNC program uses the correct thread pitch and climb or conventional milling direction for the material being cut. Handle carbide tooling carefully to avoid chipping the cutting edges during setup and storage.\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 and External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 20 TPI\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: 0.3350 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: 0.8750 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\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\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  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242117\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: 70076-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51739557003570,"sku":"70076-C3","price":365.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e5e0d93d2b2efba1e032cec8c5ee367a_4bbb87ae-98a2-447e-9d44-1e8ac33e8148.jpg?v=1788816222","url":"https:\/\/voomisupply.com\/products\/harvey-tool-70076-c3-helical-flute-thread-mill-7-16-20","provider":"Voomi Supply","version":"1.0","type":"link"}