Open End Wrench KS Tools 517.0540 Steel 40mm 350mm

The KS Tools 517.0540 open end wrench is a single open-ended spanner made of durable steel, with a 40 mm jaw size and an overall length of 350 mm. Weighing 620 g, this tool is built for heavy-duty use and provides reliable mechanical leverage for tightening and loosening fasteners in professional workshops and industrial settings.

Advantages

The steel construction ensures long service life and resistance to deformation under load. The 40 mm open end offers a precise fit for compatible nuts and bolts, while the 350 mm length increases torque and reach. Its relatively compact weight for its size makes it practical to handle during extended use.

Suitable for

• Tightening and loosening 40 mm nuts and bolts
• Automotive repair and maintenance
• Industrial and workshop assembly tasks
• Heavy-duty mechanical applications requiring high torque

Key specifications

• Brand: KS Tools
• Model / MPN: 517.0540
• Type: Single open end wrench (open-ended spanner)
• Jaw size: 40 mm
• Length: 350 mm
• Material: Steel
• Weight: 620 g
• EAN: 4042146171066

How to use

Select the wrench so the 40 mm open jaw fits snugly onto the fastener. Position the open end fully onto the nut or bolt head to avoid slipping. Apply steady force to rotate the fastener; use the wrench length to increase torque while maintaining control. Inspect the tool for damage before use and ensure safe working posture when applying high torque.

Usage recommendations

Use the KS Tools 517.0540 open end wrench on appropriately sized fasteners only. Avoid prying or using the wrench as a hammer. Store in a dry place to prevent corrosion and inspect regularly for wear or deformation to maintain safe operation.