{"product_id":"robbjack-s1-301-03-square-end-mill-3-32-in-solid-carbide","title":"Robbjack S1-301-03 Square End Mill 3\/32 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK S1-301-03 is a solid carbide square end mill designed for precision milling in metal, composites, and other hard materials. It features a 3\/32-inch cutting diameter, three spiral flutes, and a 30-degree helix angle that promotes efficient chip evacuation and smooth cutting action. The stub-length geometry keeps the tool rigid, reducing deflection during aggressive cuts. This uncoated carbide tool is suited for machinists, tool-and-die professionals, and CNC operators working in job shops or production environments where tight tolerances and consistent tool geometry are required.\u003c\/p\u003e\n\u003cp\u003eThe S1-301-03 is built for light-to-medium milling operations where small-diameter precision tooling is needed. Its centercutting capability allows direct plunge entry into the workpiece without pre-drilling. The straight cylindrical shank fits standard collets sized for 1\/8-inch shank tooling, making it compatible with a wide range of CNC machining centers and manual mills. This tool is well suited for slotting, profiling, and contouring passes in tight workpiece features where larger tools cannot reach.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide C2-grade construction for hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003e3\/32-inch cutting diameter with a 3\/16-inch length of cut for small-feature work\u003c\/li\u003e\n  \u003cli\u003eThree right-hand spiral flutes at 30-degree helix for effective chip removal\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge without pre-drilled entry hole\u003c\/li\u003e\n  \u003cli\u003eStub-length body reduces deflection and improves rigidity in short-reach applications\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suitable for use across a range of base materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid carbide square end mill within the ROBBJACK S1-301 series, fitting standard 1\/8-inch straight cylindrical collet toolholders on CNC machining centers and manual milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the collet. Use a calibrated torque wrench and the collet manufacturer's recommended seating depth to secure the shank without over-clamping. Verify runout with a dial indicator after installation, as small-diameter carbide tools are sensitive to collet concentricity errors.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/16 inch (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/8 inch (0.1250 inches)\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\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\u003eLength Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 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: S1-301\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: S1-301-03\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52018717163826,"sku":"S1-301-03","price":41.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0294a85d10892d361002486d3b667a15_63187d44-e27c-4823-ba9e-4e4061f526e4.jpg?v=1790010398","url":"https:\/\/voomisupply.com\/products\/robbjack-s1-301-03-square-end-mill-3-32-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}