{"product_id":"robbjack-nr-204-16-square-end-mill-1-2-in-2-flute-carbide","title":"Robbjack NR-204-16 Square End Mill 1\/2 in 2 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROBBJACK NR-204-16 is a solid carbide square end mill designed for general-purpose milling in a wide range of materials. Measuring 0.5 inches in cutting diameter with a 1-inch length of cut and a 3-inch overall length, this tool delivers precise material removal in both slotting and peripheral milling operations. The two-flute, right-hand spiral geometry with a 30-degree helix angle promotes efficient chip evacuation. The uncoated, centercutting design allows for plunge cuts as well as conventional side milling. It is installed and used by machinists and toolroom operators working on CNC mills and manual vertical mills.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use in ferrous and non-ferrous machining applications where a regular-length, straight-shank tool is required. The 0.5-inch straight cylindrical shank fits standard 1\/2-inch collets and end mill holders. The NR-204 series is a regular-length line, making it appropriate for general shop work including profiling, contouring, and slotting in production and job-shop environments. No extended reach is built into this tool, so it is best applied where workpiece clearance allows a compact setup.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction in material grade C2 for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eTwo-flute, right-hand cut and right-hand flute spiral geometry with 30-degree helix angle\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows plunge entry without a pre-drilled hole\u003c\/li\u003e\n\u003cli\u003eUncoated finish suitable for use with appropriate cutting fluids on a broad range of materials\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank for direct fitment in standard collet chucks and end mill holders\u003c\/li\u003e\n\u003cli\u003eRegular-length profile keeps tool deflection low in standard-depth applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style solid carbide square end mill in the ROBBJACK NR-204 series, compatible with any machine spindle or toolholder accepting a 0.5-inch straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists following standard machine tool lockout and spindle-stop procedures before changing tooling. The shank should be seated to the minimum recommended insertion depth in the collet or end mill holder and secured to the toolholder manufacturer's specified clamping torque using appropriate tooling. Confirm runout with a dial indicator before commencing cuts. Do not use this tool beyond its rated length of cut or at feed and speed parameters outside the material grade C2 carbide recommendations for the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 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\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\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: 0.1875 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: ROBBJACK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NR-204-16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52003794649394,"sku":"NR-204-16","price":297.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66f88c70ecb3d283150e64c9c185646e_41e201a0-c637-4e7e-9261-5fbe3ebe778d.jpg?v=1789999052","url":"https:\/\/voomisupply.com\/products\/robbjack-nr-204-16-square-end-mill-1-2-in-2-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}