Box-end driving wrench JCB 95 mm — JCB JCB-79395

Box-end driving wrench JCB 95 mm — JCB JCB-79395 is a heavy-duty closed-end wrench designed for high torque transfer in driving and striking applications. The tool features a 95 mm diameter box end shaped to fit large hex or similar fasteners used on construction equipment, heavy machinery and structural assemblies. Built for impact or hammer-assisted operation, this JCB box-end driving wrench provides a secure contact surface and resistance to deforming under load, allowing reliable fastening and loosening of large nuts and bolts in demanding environments.

Advantages

The 95 mm closed-end design concentrates force around the fastener to reduce slippage and rounding. Manufactured by a recognised brand for heavy equipment tools, the wrench is intended to withstand repeated impact loading and frequent use. Its robust construction offers dimensional stability and consistent seating on fastener faces, which helps maintain alignment and improve torque transmission during hammer-assisted operations.

Suitable for

• Maintenance and repair of construction machinery and earthmoving equipment
• Servicing heavy trucks, trailers and agricultural machines
• Assembly and disassembly of large structural fastenings on sites
• Field repairs where impact or sledgehammer assistance is required

Key specifications

• Box-end diameter: 95 mm
• Closed-end (box) configuration for full-contact engagement with fasteners
• Designed for impact and hammer-assisted operation
• Suitable for large hex or similarly shaped nuts and bolts
• Construction-grade durability for repeated heavy use

How to use

Select the wrench to match the 95 mm fastener profile and seat the box end fully over the nut or bolt head to ensure complete contact. When using with hand torque, ensure the handle or driving extension is aligned to avoid side loading. For hammer-assisted operation, position the wrench squarely on the fastener and apply measured strikes to the driving surface, checking between impacts to confirm secure engagement and to avoid rounding the fastener. After use, inspect the box end for distortion and store in a dry location.

Usage recommendations

Use the wrench only on correctly sized fasteners and with appropriate impact-rated extensions or drivers. Avoid excessive side loading and repeated off-centre strikes. Regularly inspect for wear or deformation and replace the tool if the contact surfaces show significant damage to maintain safe and effective torque transfer.