{"product_id":"seco-75072173-square-shoulder-end-mill-1-in-weldon-flat","title":"Seco 75072173 Square-shoulder End Mill 1 in Weldon Flat","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 75072173 is an indexable square-shoulder end mill designed for precision milling operations in metalworking and machining applications. Built around the R417.19 cutter style, this tool features a 1-inch cutting diameter and a maximum depth of cut of 0.31 inches. It accepts one SPMX 0903 series insert secured by a screw-style insert-holding method, making insert changes fast and repeatable. The Weldon flat shank measures 1 inch in diameter and 3.54 inches in length, providing secure tool holding in compatible end mill holders. With a maximum spindle speed of 22,500 RPM and a 90-degree lead angle, this tool is suited for full square-shoulder milling passes with accurate 90-degree wall geometry.\u003c\/p\u003e\u003cp\u003eThis end mill is used in CNC milling operations for face milling, shoulder milling, and slotting where a true 90-degree shoulder is required. It is a two-flute configuration with a single insert seat, making it well suited for lighter-duty square-shoulder cuts in steel, cast iron, and similar workpiece materials. The tool does not include through-spindle coolant capability. Machinists and tooling setters working with horizontal and vertical machining centers will find this a straightforward drop-in toolholder for compatible insert grades. Overall length is 5.12 inches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eR417.19 cutter style with 90-degree lead angle for true square-shoulder milling\u003c\/li\u003e\n\u003cli\u003e1-inch cutting diameter with 0.31-inch maximum axial depth of cut\u003c\/li\u003e\n\u003cli\u003eAccepts SPMX 090304, SPMX 0903AP, and APT-compatible inserts\u003c\/li\u003e\n\u003cli\u003eScrew-style insert clamping for secure, repeatable insert seating\u003c\/li\u003e\n\u003cli\u003e1-inch Weldon flat shank with 3.54-inch shank length for rigid tool holding\u003c\/li\u003e\n\u003cli\u003eMaximum spindle speed of 22,500 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible inserts include SPMX 090304, SPMX 0903AP, and APT-series inserts. ISO designation for this tool body is R417.19-01.00-3.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or tooling technician using a standard Weldon-style end mill holder sized for a 1-inch shank. The machine spindle must be powered down and the tool fully stopped before any insert change or tool change procedure. Torque the insert-retention screw to the tool manufacturer recommendation referenced in the SECO tooling catalog for SPMX 0903 inserts. Verify tool runout with a dial indicator after clamping before initiating a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Number\u003c\/strong\u003e: R417.19-01.00-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutter Style\u003c\/strong\u003e: R417.19\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 5.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 3.54 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutter Inserts\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: SPMX 090304, SPMX 0903AP, APT\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: 22,500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Milling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: 75072173\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51564133482802,"sku":"75072173","price":618.31,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e026189755e376c98c84d9f693aa391f.jpg?v=1786511881","url":"https:\/\/voomisupply.com\/products\/seco-75072173-square-shoulder-end-mill-1-in-weldon-flat","provider":"Voomi Supply","version":"1.0","type":"link"}