{"product_id":"robbjack-s1-401-14-square-end-mill-7-16-in-4-flute-carbide","title":"Robbjack S1-401-14 Square End Mill 7\/16 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK S1-401-14 is a solid carbide square end mill designed for precision milling operations in metal and engineered materials. It features a 7\/16 inch cutting diameter, a 5\/8 inch length of cut, and a 2-3\/4 inch overall length. The 4-flute, spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and surface finish quality. Centercutting geometry allows for direct plunge entry as well as conventional peripheral milling. This tool is installed and operated by machinists and CNC programmers working in job shop and production environments.\u003c\/p\u003e\n\u003cp\u003eThe S1-401-14 is suited for milling slots, pockets, profiles, and shoulders in ferrous and non-ferrous workpiece materials. The stub-length profile and matched 7\/16 inch shank diameter provide rigidity in tight-clearance setups and short-reach applications. Right-hand cut and right-hand flute orientation make it compatible with standard spindle configurations on vertical and horizontal machining centers as well as manual knee mills.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction rated to material grade C2 for hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003e4-flute spiral design with 30-degree helix angle for balanced cutting forces and chip flow\u003c\/li\u003e\n  \u003cli\u003eCentercutting geometry supports plunge milling and ramping entries\u003c\/li\u003e\n  \u003cli\u003eStub-length body (5\/8 inch LOC, 2-3\/4 inch OAL) maximizes rigidity in short-reach setups\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, right-hand flute for standard CNC and manual spindle compatibility\u003c\/li\u003e\n  \u003cli\u003eUncoated finish; mill diameter tolerance of +0.000 \/ -0.003 inches for consistent fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard tooling selection within the ROBBJACK S1-401 series for use in CNC machining centers and manual mills with 7\/16 inch collet or end mill holder configurations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before inserting or removing the end mill from the holder. Verify collet or holder bore size matches the 7\/16 inch shank diameter and inspect the shank for runout before tightening. Consult the machine tool manufacturer and applicable shop safety standards for recommended clamping torque and speeds and feeds for the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 7\/16 inch (0.4375 inches)\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: 5\/8 inch (0.6250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 7\/16 inch (0.4375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-3\/4 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\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\u003eLength Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.003 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: S1-401\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1875 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: S1-401-14\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52066034745650,"sku":"S1-401-14","price":136.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c6f9dd9414b4a410ed026f337145d0ff_1abc6acb-149b-4805-be52-fc9e973ead0c.jpg?v=1790045282","url":"https:\/\/voomisupply.com\/products\/robbjack-s1-401-14-square-end-mill-7-16-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}