{"product_id":"robbjack-nr-204-10-square-end-mill-5-16-in-2-flute-carbide","title":"Robbjack NR-204-10 Square End Mill 5\/16 in 2 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK NR-204-10 is a 2-flute, solid carbide square end mill designed for general-purpose milling operations in metalworking and machining environments. Built to Series NR-204 standards, it features a 5\/16 inch diameter with a matching 5\/16 inch straight cylindrical shank, a 13\/16 inch length of cut, and a 2-1\/2 inch overall length. The 30-degree spiral flute geometry and right-hand cut with right-hand flute direction promote efficient chip evacuation and stable cutting action. Its centercutting capability allows plunge entry directly into the workpiece. Machining centers and CNC mills in job shops, tool rooms, and production environments are the primary setting for this tool.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a regular-length, uncoated carbide tool is appropriate. The uncoated finish and C2 carbide grade make it a practical choice for aluminum, brass, plastics, and softer steels where a coating is unnecessary or where re-sharpening is anticipated. It ships as a single unit and is a direct fit wherever a 5\/16 inch shank, 2-flute square end mill of regular length is specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction, C2 material grade, for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003e2 flutes with 30-degree spiral geometry for efficient chip removal\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge milling without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute direction for standard CNC and manual mill setups\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suitable for non-ferrous metals, plastics, and softer alloys\u003c\/li\u003e\n  \u003cli\u003eRegular-length geometry with straight cylindrical shank for broad collet and chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard tooling option for any machine spindle accepting a 5\/16 inch straight cylindrical shank end mill, including ER collet systems and end mill holders sized for 5\/16 inch tooling.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or CNC operator. Ensure the spindle and collet or tool holder are clean and free of debris before seating the shank. Confirm runout with a dial indicator after tightening to the tool holder manufacturer's specified torque. Always power down and lock out the machine before changing tooling per applicable shop safety and OSHA lockout\/tagout procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eLength of Cut\u003c\/strong\u003e: 13\/16 inch (0.8125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.001 \/ -0.000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.060 \/ -0.060 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: NR-204\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.125 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-204-10\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":51980897419570,"sku":"NR-204-10","price":83.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66f88c70ecb3d283150e64c9c185646e_f70170f0-a87f-4d4e-a42f-007f80e8bbc0.jpg?v=1789981882","url":"https:\/\/voomisupply.com\/products\/robbjack-nr-204-10-square-end-mill-5-16-in-2-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}