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The SECO 02998311 is a T-Handle Driver wrench designed for tightening and loosening indexable toolholder hardware in milling applications. Built from steel, it features a Torx Plus T07P drive and is sized for Double-T style toolholders used in milling holder assemblies. At 2.87 inches overall length and 0.02 pounds, this compact wrench delivers the precise drive engagement needed to properly seat or remove insert-clamping screws without damaging Torx Plus fastener heads. It belongs to the H4B series and is a standard accessory item for machinists and toolroom technicians working with SECO indexable milling toolholders.
This wrench is intended for use in machine shops, production environments, and toolroom settings where SECO Double-T style milling toolholders are in service. It is used during insert changes, toolholder assembly, and maintenance of indexable milling systems. The T-Handle design provides controlled torque application by hand, making it well suited for insert clamping screws where over-torquing can damage the screw or pocket seat. Machinists and tool-crib technicians typically keep this wrench staged at the machine or in a tool kit alongside the relevant toolholder hardware.
Designed for use with SECO Double-T style milling toolholders requiring a Torx Plus T07P drive fastener. Specific compatible toolholder model numbers were not provided in available product data.
Insert changes and toolholder hardware service should be performed with the machine powered down and the spindle fully stopped. Use this wrench to engage the Torx Plus screw squarely to avoid cam-out or fastener damage. Follow the toolholder manufacturer torque specifications for insert clamping screws, as under- or over-torquing affects cutting performance and insert seating. This work is typically performed by machinists or tool-crib personnel familiar with indexable tooling systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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