120mm Clutch Style Screw Clamp For Guide Rails

120mm clutch style screw clamp gives woodworkers a traditional screw-driven hold that works with the bottom continuous T-slot of Festool guide rails. This design clamps the rail securely to the workpiece so cuts track straight along your layout lines. The Festool branding ties this clamp to common rail systems many shops already use, which helps maintain consistent handling from job to job. A clamping thickness of 4-11/16 inches handles typical sheet goods and solid stock used in cabinet and furniture work. The clutch style head lets you position the clamp under the rail while keeping the screw handle accessible at the edge of the material, which supports a straightforward setup on benches or sawhorses. The clamp design focuses on a dependable mechanical grip, giving installers a repeatable way to stabilize the guide rail during rip, crosscut, or trimming operations.

Key Festool Screw Clamp Job Advantages

• The traditional screw mechanism gives you progressive pressure control on the guide rail, which helps keep the rail from creeping during longer cuts.
• The head is shaped to work in the bottom continuous T-slot of Festool guide rails, so the clamp locates in a defined track rather than relying on improvised edge clamping.
• The 4-11/16 inch clamping thickness range covers many cabinet-grade panels and common construction stock, which supports using one clamp style across varied jobs.
• The 120mm size keeps the clamp compact around the rail area, helping reduce interference with saw travel and hand positioning along the cut path.
• The pairing of Festool brand and the 489570 part number lets shops reorder the same clamp consistently, maintaining matching workholding behavior across multiple rails.

Festool Clamp Mounting And Clamping Details

This Festool traditional screw clamp is built to sit in the bottom continuous T-slot of compatible guide rails, so its head slides into the track before you bring the rail onto the work. Once the rail is positioned, the screw handle is turned to bring the clamping pad up against the underside of the bench or work support, locking the rail and workpiece together. The 4-11/16 inch clamping thickness capacity gives enough reach for typical bench tops plus work material, so the clamp can pull the rail assembly firmly down. The screw action also lets you fine-tune pressure as you align the rail to marks, then lock it without sudden movement. With a 120mm clutch style format, the clamp occupies a modest footprint around the rail while still providing practical reach to the adjustment handle at the edge of the setup.

Using The 120mm Clutch Style Screw Clamp On The Job

Where This Festool Screw Clamp Performs Best

This Festool 120mm clutch style screw clamp is suited to tasks where a guide rail must stay fixed to the material while you cut or rout. The head is designed for the bottom continuous T-slot of Festool guide rails, so it positions directly under the track rather than off to the side. This alignment keeps clamping forces close to the cut line, which supports cleaner tracking when doing straight-line cuts in cabinet panels, shelving, or furniture components. The 4-11/16 inch clamping thickness handles common combinations of workpiece and support, such as sheet goods on a shop table, solid lumber on a bench, or panels on sacrificial sleepers. By using the same clamping thickness rating across setups, installers can plan work supports and rail placement with predictable clearance and reach.

How Clamp Design Supports Repeatable Rail Results

The traditional screw clamp mechanism on this 120mm Festool unit lets you tighten pressure gradually, which reduces the risk of bumping a carefully positioned guide rail as you secure it. Because the head captures in the bottom continuous T-slot, the clamp resists twisting under load, keeping the rail alignment stable even when the saw cord or hose pulls lightly against the setup. The 120mm size and 4-11/16 inch clamping thickness rating define how far the clamping jaw travels, so crews can standardize on bench thicknesses and support stacks that stay within that reach. The 489570 part number allows shops to match clamps across multiple workstations, so each rail locks down using the same screw feel and geometry. This consistency supports repeatable cutting workflows, especially when multiple team members share guide rail setups.

Common Questions About Festool 489570 Screw Clamp

Select This Festool Clamp For Guide Rail Holding

The Festool 120mm clutch style screw clamp with 4-11/16 inch clamping thickness provides a defined way to lock guide rails through the bottom continuous T-slot. For woodworking shops relying on consistent rail alignment, using the Festool 489570 clamp keeps workholding predictable across benches and materials. When a job calls for steady rail tracking and repeatable setups, this traditional screw clamp format fits straight into established Festool-focused workflows.