{"product_id":"iscar-4390045-insert-screw-indexable-milling-t490-sm","title":"Iscar 4390045 Insert Screw Indexable Milling T490 Sm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ISCAR 4390045 is an insert screw designed to secure indexable inserts in milling toolholders. This small but critical fastener keeps cutting inserts locked in position during milling operations, maintaining edge geometry and preventing insert movement under cutting loads. It belongs to the Helitang series and is compatible with T490 SM toolholder styles. Installation requires a BLD T15\/S7 key or driver. The part weighs approximately 0.01 pounds, reflecting its compact form factor. Licensed machinists and toolroom technicians are the primary users of this hardware during insert changeovers on milling setups.\u003c\/p\u003e\u003cp\u003eThis insert screw is used in indexable milling applications where T490 SM style toolholders are in service. It is a direct replacement screw for maintaining toolholder hardware on Helitang series milling bodies. Typical install scenarios include production floor insert changes, toolholder refurbishment, and preventive hardware replacement to avoid screw wear-related insert seating failures. It is sold individually but must be ordered in multiples of 10.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFits T490 SM toolholder style for indexable milling applications\u003c\/li\u003e\n\u003cli\u003ePart of the Helitang series insert hardware line\u003c\/li\u003e\n\u003cli\u003eRequires BLD T15\/S7 key or driver for installation and removal\u003c\/li\u003e\n\u003cli\u003eSecures indexable inserts including T490 LNAR and T490 LNHT and T490 LNMT insert families\u003c\/li\u003e\n\u003cli\u003eMinimum order quantity of 10 units supports bulk toolroom stocking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with the following indexable inserts: T490 LNAR 1306PN-R, T490 LNAR 1306PN-R-P, T490 LNHT 1306PN-R PL, T490 LNHT 1306PNTL, T490 LNHT 1306PNTR, T490 LNMT 1306PNTR, and T490 LNMT 1306PNTR-CS. Designed for use with T490 SM style toolholders in the Helitang series.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and removal should be performed with the machine powered off and the spindle fully stopped. Use only the specified BLD T15\/S7 key or driver to avoid stripping the screw head. Inspect the screw threads and toolholder pocket threads for wear or damage before reinstalling an insert. Worn or cross-threaded insert screws should be replaced rather than reused, as a loose screw can cause insert ejection during a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Type\u003c\/strong\u003e: Insert Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndexable Tool Type\u003c\/strong\u003e: Milling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style Compatibility\u003c\/strong\u003e: T490 SM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Helitang\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey\/Driver Compatibility\u003c\/strong\u003e: BLD T15\/S7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Compatibility\u003c\/strong\u003e: Indexable Insert\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ISCAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4390045\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ISCAR","offers":[{"title":"Default Title","offer_id":51730228871474,"sku":"4390045","price":62.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed3a52eda95fdeef665ca66efa46250d.jpg?v=1788713718","url":"https:\/\/voomisupply.com\/products\/iscar-4390045-insert-screw-indexable-milling-t490-sm","provider":"Voomi Supply","version":"1.0","type":"link"}