{"product_id":"robbjack-sr-4-047-square-end-mill-3-64-in-4-flute-carbide","title":"Robbjack SR-4-047 Square End Mill 3\/64 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ROBBJACK SR-4-047 is a 4-flute, solid carbide square end mill from the SR-4 Series, designed for precise milling in tight-tolerance applications. It features a 3\/64 inch (0.0470 inch) mill diameter with a 9\/64 inch (0.1410 inch) length of cut and a 1\/8 inch straight-cylindrical shank. Built from ROBBJACK Tuffy-grade solid carbide, this end mill delivers the rigidity and wear resistance needed for small-diameter work in ferrous and non-ferrous materials. Centercutting geometry allows plunge milling as well as peripheral and slot cuts. Installed by machinists and tool-and-die professionals, it suits CNC machining centers and manual mills running high-speed finishing or detail work.\u003c\/p\u003e\u003cp\u003eThe SR-4-047 fits residential and commercial machining applications where fine-feature milling is required. Its 1-1\/2 inch overall length and regular-length classification make it appropriate for standard-reach slotting, profiling, and pocket milling on small components and precision parts. The uncoated finish is suited for applications where re-sharpening is anticipated or where coating interaction with the workpiece material is a concern. Right-hand cut and right-hand spiral flute orientation align with conventional CNC and manual mill setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/64 inch mill diameter (0.0470 inch) with tight tolerance of +0.0005\/-0.0005 inch for precise fitment\u003c\/li\u003e\n\u003cli\u003e4-flute spiral geometry with 30-degree helix angle for smooth chip evacuation and surface finish\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables both plunge and peripheral milling operations\u003c\/li\u003e\n\u003cli\u003eTuffy-grade solid carbide construction for hardness and thermal resistance in small-diameter cuts\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute for standard machine compatibility\u003c\/li\u003e\n\u003cli\u003eUncoated finish suitable for re-sharpening and compatible with a broad range of workpiece materials\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 SR-4 Series, compatible with standard 1\/8 inch collets and straight-cylindrical shank toolholders on CNC machining centers and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, de-energized state. Ensure the collet or toolholder bore matches the 1\/8 inch shank diameter before tightening. Do not exceed the recommended depth of cut for small-diameter carbide end mills, as solid carbide is brittle and susceptible to breakage under lateral shock loads. Follow all applicable machine-specific tooling and runout specifications during setup.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/64 inch (0.0470 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0005\/-0.0005 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: 9\/64 inch (0.1410 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/8 inch (0.1250 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\u003c\/strong\u003e: 1-1\/2 inch (1.5000 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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Tuffy\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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: SR-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0625 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: SR-4-047\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52054633251122,"sku":"SR-4-047","price":41.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/338e2279515db76998518250c39ea3ec_4bd843b9-e082-4d6d-b2c1-4504c2033641.jpg?v=1790037033","url":"https:\/\/voomisupply.com\/products\/robbjack-sr-4-047-square-end-mill-3-64-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}