{"product_id":"accupro-40278848-m4-clamping-screw-grooving-toolholder","title":"Accupro 40278848 M4 Clamping Screw Grooving Toolholder","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 40278848 is an M4 clamping screw designed to secure indexable inserts in GD-style grooving toolholders and cutoff tool blocks. Part of the CI series, this hex socket drive fastener is machined from steel for reliable clamping force and resistance to the stresses of interrupted cuts and grooving operations. At 16 millimeters overall length, it is a direct-fit hardware component intended for machinists and toolroom technicians maintaining indexable tooling systems on CNC lathes and turning centers. Sold individually, it is a straightforward replacement when an existing clamping screw is worn, stripped, or lost.\u003c\/p\u003e\u003cp\u003eThis clamping screw is suited for use in production and job-shop turning environments where GD-style grooving toolholders are in service. It is specifically compatible with cutoff tool blocks that accept M4 fasteners and GD-style hardware. Machinists performing insert changes or toolholder rebuilds on CNC or manual lathes will use this fastener to restore proper insert seating and clamping integrity. It is a single-unit replacement part appropriate for both scheduled maintenance and unplanned tooling repairs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM4 thread size for use with GD-style grooving toolholder systems\u003c\/li\u003e\n\u003cli\u003eHex socket drive for reliable torque application with standard Allen keys\u003c\/li\u003e\n\u003cli\u003e16 millimeters overall length provides proper engagement depth in compatible toolholders\u003c\/li\u003e\n\u003cli\u003eSteel construction withstands clamping loads generated during grooving and cutoff operations\u003c\/li\u003e\n\u003cli\u003eCI series designation for straightforward cross-reference and reorder\u003c\/li\u003e\n\u003cli\u003eSold as a single unit for targeted replacement without surplus inventory\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with GD-style grooving toolholders and cutoff tool blocks that accept M4 clamping screws with hex socket drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by the machinist or toolroom technician servicing the indexable toolholder. Power down and lock out the machine before accessing the toolholder. Use a properly sized hex key to seat the screw evenly without cross-threading the toolholder bore. Do not exceed the toolholder manufacturer's recommended clamping torque for M4 fasteners, and inspect the thread bore for damage before installing a replacement screw.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eOverall Length\u003c\/strong\u003e: 16 millimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndexable Tool Type\u003c\/strong\u003e: Grooving Toolholder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style Compatibility\u003c\/strong\u003e: GD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Compatibility\u003c\/strong\u003e: Cutoff Tool Block\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: 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 40278848\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730714362162,"sku":"40278848","price":23.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c52f417c90cf163173aa8819ff86b0e1_49eb29fa-70c4-40f6-b3dd-641ac65637f8.jpg?v=1788721689","url":"https:\/\/voomisupply.com\/products\/accupro-40278848-m4-clamping-screw-grooving-toolholder","provider":"Voomi Supply","version":"1.0","type":"link"}