Wrench, JCB angled ring wrench 45° 36–41 mm

JCB angled ring wrench 45° 36–41 mm is a fixed-size box wrench designed for applying torque to large nuts and bolts where straight tools cannot reach. The 45° offset head provides improved access in confined, recessed or angled workspaces common in mechanical, agricultural and construction maintenance. The stepped size range 36–41 mm covers several large fasteners without changing tools, making it a practical option for field repairs and workshop use.

Advantages

The 45° angled ring head allows a lower-profile approach to fasteners and reduces the need to reposition the tool, enabling work in tight or awkward positions. As a fixed ring (box) wrench it delivers full contact around the nut or bolt head, minimising slippage and rounding compared with open-ended designs. The large size span 36–41 mm reduces tool changes when working with heavy machinery fasteners and simplifies inventory by covering multiple common large diameters in one tool.

Suitable for

• Maintenance and repair of agricultural machinery (tractors, harvesters)
• Heavy construction equipment servicing and onsite adjustments
• Workshop and field work on mechanical assemblies with large nuts and bolts
• Tight or recessed fastening points where access is limited

Key specifications

• Wrench type: angled ring (box) wrench with 45° offset
• Size range: 36–41 mm (fixed ring surfaces covering specified sizes)
• Intended use: large fasteners on mechanical, agricultural and construction equipment
• Design feature: offset head for access in confined spaces

How to use

Select the correct face of the ring wrench matching the nut or bolt size within the 36–41 mm range, then position the ring fully over the fastener to ensure full contact. Apply steady torque from the handle, keeping the wrench aligned with the fastener to avoid side loading. For confined or angled locations use the 45° offset to approach the fastener from a clearance-friendly angle; if more rotation is required, reposition the wrench as needed and continue applying controlled force.

Usage recommendations

Use appropriate personal protective equipment and ensure the fastener and surrounding components are stable before applying torque. Inspect the wrench for wear or damage before use; do not use if teeth or contact surfaces are rounded or compromised. For high-torque applications consider using correctly rated sockets or torque tools to prevent overloading the wrench or fastener.