{"product_id":"accupro-40278046-clamping-screw-m4-torx-hfc13-milling","title":"Accupro 40278046 Clamping Screw M4 Torx HFC13 Milling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 40278046 is an M4 clamping screw designed to secure indexable inserts on milling cutter toolholders. Manufactured from steel, this Torx-drive fastener provides reliable insert clamping force during milling operations. At 10.5 millimeters in overall length, it is sized for HFC13 series toolholders and delivers consistent seating across indexable insert changes. Machining professionals and tool crib technicians rely on replacement clamping screws like this one to maintain proper insert retention and cutting geometry. Sold individually, it is a direct replacement for worn or damaged hardware in high-cycle milling environments.\u003c\/p\u003e\n\u003cp\u003eThis clamping screw is intended for use with indexable milling cutters that accept HFC13 toolholder-style hardware. It fits applications in both job shop and production machining settings where M4 Torx clamping screws are the specified fastener for insert retention. The CI series designation identifies its design family within the ACCUPRO indexable tooling lineup. Machinists and toolroom personnel performing routine insert changes or toolholder maintenance will use this part to restore proper clamping function.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM4 thread size for compatibility with HFC13 series indexable milling toolholders\u003c\/li\u003e\n  \u003cli\u003eTorx drive type for positive engagement and reduced cam-out during tightening\u003c\/li\u003e\n  \u003cli\u003e10.5 millimeter overall length sized for correct seating depth in designated toolholders\u003c\/li\u003e\n  \u003cli\u003eSteel construction for strength under repeated clamping cycles\u003c\/li\u003e\n  \u003cli\u003eSold as a single unit for targeted replacement without surplus inventory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with HFC13 style indexable milling cutter toolholders requiring an M4 Torx clamping screw.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician familiar with indexable tooling systems. Ensure the milling cutter is removed from the spindle and fully secured before replacing clamping hardware. Use the correct Torx key size for the M4 fastener to avoid drive recess damage. Do not exceed the toolholder manufacturer's specified tightening procedure for insert clamping screws.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Type\u003c\/strong\u003e: Clamping Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Torx\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 10.5 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style Compatibility\u003c\/strong\u003e: HFC13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndexable Tool Type\u003c\/strong\u003e: Milling Cutter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.022 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161500\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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 40278046\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51727882092850,"sku":"40278046","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1387a1cbc85e69f037e155e448d18e22_fda5cb1c-b419-4224-bbd7-21a7b5ebcb82.jpg?v=1788683942","url":"https:\/\/voomisupply.com\/products\/accupro-40278046-clamping-screw-m4-torx-hfc13-milling","provider":"Voomi Supply","version":"1.0","type":"link"}