{"product_id":"robbjack-str-401-08-c-square-end-mill-1-4-inch-solid-carbide","title":"Robbjack STR-401-08-C Square End Mill 1\/4 Inch Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROBBJACK STR-401-08-C is a solid carbide square end mill designed for precision metal removal in milling applications. It features a 1\/4 inch cutting diameter, a 1\/2 inch length of cut, and a 2-1\/2 inch overall length with a 1\/4 inch shank. The four-flute, right-hand cut and right-hand flute geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finishes. A TiCN coating adds surface hardness and heat resistance, extending tool life in demanding cuts. This is a centercutting tool, allowing plunge entry directly into the workpiece. It belongs to the STR-401 series stub-length configuration.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use in CNC machining centers and manual knee mills where stub-length rigidity reduces deflection in tight-tolerance work. The stub length profile makes it appropriate for shallow-pocket milling, slotting, and contouring operations in ferrous and non-ferrous materials. Fine pitch flute spacing supports performance in harder alloys. Machinists and tool-and-die professionals working in job shops, production environments, or maintenance machining applications will find this tool fits standard ER and end mill holder tooling systems.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiCN finish improves surface hardness and extends tool life in abrasive materials\u003c\/li\u003e\n\u003cli\u003eFour flutes with fine pitch for smooth cuts in harder workpiece materials\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle supports chip flow and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry\u003c\/li\u003e\n\u003cli\u003eStub length (LOC 1\/2 inch) minimizes deflection in shallow-pocket operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for 1\/4 inch end mill holders and ER collet chuck systems used in CNC and manual milling applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or tooling setup technicians. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the holder and torque the collet nut or set screw to the toolholder specification. Verify runout with a dial indicator before beginning a cut to confirm proper seating and minimize premature tool wear.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut (LOC)\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\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: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut Type\u003c\/strong\u003e: Centercutting\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\u003ePitch\u003c\/strong\u003e: Fine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.125 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: STR-401-08-C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52121783927090,"sku":"STR-401-08-C","price":119.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ad1a28c54074e1b7f537105e1af8ee17_ac1400ba-1f1c-4e2c-a7d7-32a61621c10d.jpg?v=1790084802","url":"https:\/\/voomisupply.com\/products\/robbjack-str-401-08-c-square-end-mill-1-4-inch-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}