{"product_id":"seco-02688957-square-shoulder-end-mill-1-1-4-in-3-flute","title":"Seco 02688957 Square-shoulder End Mill 1-1\/4 in 3 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 02688957 is an indexable square-shoulder end mill from the Super Turbo series, designed for high-efficiency milling operations in metalworking and machining environments. It accepts three XO.X 1204.. inserts secured by screw clamping, delivering a 90-degree lead angle and a maximum depth of cut of 0.433 inches. The 1-1\/4-inch cutting diameter and through-coolant capability make this tool well suited for demanding roughing and semi-finishing passes where heat control and chip evacuation are critical. With a maximum spindle speed of 18,400 RPM, it is built for high-productivity setups on modern CNC machining centers. Installation and setup are handled by machinists and CNC operators working in job shop, production, and toolroom environments.\u003c\/p\u003e\u003cp\u003eThis end mill is used in square-shoulder milling applications where a true 90-degree wall is required. The Weldon flat shank provides positive drive and slip resistance in side-lock tool holders. The through-coolant design supports extended tool life and consistent performance when cutting ferrous and non-ferrous materials. With an overall length of 4.25 inches and a usable length of 3.11 inches, it covers a practical range of reach requirements in typical CNC vertical and horizontal machining center setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-1\/4-inch cutting diameter with a 90-degree lead angle for true square-shoulder milling\u003c\/li\u003e\n\u003cli\u003eAccepts 3 XO.X 1204.. indexable inserts with screw-lock retention\u003c\/li\u003e\n\u003cli\u003eThrough-coolant capability for improved chip evacuation and thermal management\u003c\/li\u003e\n\u003cli\u003eWeldon flat shank eliminates rotational slip in side-lock holders\u003c\/li\u003e\n\u003cli\u003eMaximum spindle speed of 18,400 RPM for high-productivity CNC applications\u003c\/li\u003e\n\u003cli\u003eSuper Turbo series cutter body with ISO designation R217.69-01.25-3-12-3AN\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with XO.X 1204.. series indexable inserts. The Weldon flat shank is compatible with standard 1-1\/4-inch side-lock tool holders used on CNC machining centers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tool is installed and changed out by machinists or CNC setup technicians. Before inserting or removing the tool body from the spindle, ensure the machine is in an e-stop state and the spindle is fully locked. Use the appropriate Torx or hex key to seat insert screws to the manufacturer-specified procedure without over-torquing. Inspect insert pockets and the cutter body for damage, chips, or debris before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Number\u003c\/strong\u003e: R217.69-01.25-3-12-3AN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Super Turbo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.433 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsable Length\u003c\/strong\u003e: 3.11 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.91 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.34 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Inserts\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: XO.X 1204..\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 18,400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.88 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: SECO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 02688957\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51559029080370,"sku":"02688957","price":703.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fec432e6572c46517b53fc7b72353c51.jpg?v=1786426185","url":"https:\/\/voomisupply.com\/products\/seco-02688957-square-shoulder-end-mill-1-1-4-in-3-flute","provider":"Voomi Supply","version":"1.0","type":"link"}