Hex Allen Key (Imperial) Bondhus 3/8 in, length 171 mm, ball end

Bondhus 3/8 in hex (Allen) key, length 171 mm, with a ball end designed for use with imperial fasteners. The solid one-piece construction offers consistent torque transfer and durability for repeated use. The ball end allows angled entry up to approximately 25°, enabling access to screws and bolts that are offset or in confined spaces while the long 171 mm reach provides additional leverage and reach for deeper applications.

Advantages

The tool combines a long shaft for reach with a ball end for angular access, reducing the need to reposition the workpiece or tool. Its solid construction ensures reliable torque transmission and resistance to deformation under normal use. The imperial sizing fits standard imperial hex fasteners and the length improves leverage for loosening and tightening tasks.

Suitable for

• Assembly and disassembly of machinery and equipment using imperial hex fasteners
• Automotive maintenance where angled access or extended reach is required
• Servicing of appliances and mechanical systems in confined or recessed areas
• Maintenance shops and field service work requiring durable hand tools

Key specifications

• Hex size: 3/8 inch (imperial)
• Overall length: 171 mm
• Tip style: ball end for angled entry (up to ~25°)
• Material and construction: solid one-piece hex key for consistent torque
• Finish: corrosion-resistant surface treatment suitable for workshop environments

How to use

Select the 3/8 in hex key for the matching imperial socket head fastener. Insert the straight end for full torque when clearance allows; use the ball end when the screw is at an angle or in a recessed position to engage the fastener head. Apply steady pressure and turn with controlled force to avoid cam-out or rounding of the fastener. For stubborn or heavily corroded fasteners, back the fastener slightly before attempting to fully loosen it to reduce risk of damage.

Usage recommendations

Use the straight end for maximum torque and the ball end for access at angles up to 25°. Inspect the key and fastener condition before use; replace the tool if the tip shows significant wear or rounding. Store in a dry toolbox to maintain the corrosion-resistant finish and ensure reliable performance.