{"product_id":"robbjack-nr-404-04-5-square-end-mill-9-64-in-4-flute","title":"Robbjack NR-404-04.5 Square End Mill 9\/64 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK NR-404-04.5 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. Built from C2-grade carbide, it delivers consistent performance in ferrous and non-ferrous materials. The 4-flute, spiral geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. At 9\/64 inch (0.1406 inch) in diameter with a 1\/2 inch length of cut, this tool is sized for detail work, slotting, and profile milling where tight tolerances are required. It is uncoated and centercutting, making it suitable for both plunging and peripheral milling operations.\u003c\/p\u003e\n\u003cp\u003eThis end mill fits standard CNC machining centers, knee mills, and manual milling machines with a 3\/16 inch collet or chuck. It is well suited for small-bore profiling, slot milling, and contour work on aluminum, brass, mild steel, and similar materials. The right-hand cut and right-hand flute orientation is the industry standard for conventional and climb milling setups. With a 2 inch overall length, it provides enough reach for most standard fixturing setups without sacrificing rigidity. Machinists and CNC operators in job shops and production environments are the primary installers and users of this tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide C2-grade construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003e4 spiral flutes with 30-degree helix angle for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge entry into workpiece\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute for standard milling spindle direction\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 3\/16 inch diameter for secure collet retention\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suitable for use with cutting fluid on a range of materials\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 milling machines and CNC machining centers accepting a 3\/16 inch straight shank end mill in the NR-404 series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC operators. Power down and lock out the spindle before inserting or removing the tool from any collet or chuck. Ensure the shank is fully seated and the collet nut is torqued per the machine manufacturer's specification for the collet size in use. Inspect the cutting edges for chipping before each use and replace if wear exceeds acceptable limits for the application.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 9\/64 inch (0.1406 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch (0.5000 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: NR-404\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.001 \/ -0.000 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0002 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.060 \/ -0.060 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0625 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: ROBBJACK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NR-404-04.5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52002909716786,"sku":"NR-404-04.5","price":60.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a913e66a6f6169f1917b63fcf4a43218_978b01fe-6686-4b3e-a812-3c9db0e7a230.jpg?v=1789998410","url":"https:\/\/voomisupply.com\/products\/robbjack-nr-404-04-5-square-end-mill-9-64-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}