Hex Key (Allen Wrench) Bondhus 0.71 mm — length 31 mm

Bondhus hex key (Allen wrench) with a 0.71 mm hex size and a 31 mm overall length. This solid, single-piece tool is designed for driving very small hex fasteners commonly found in electronics, precision instruments and delicate assemblies. The compact form factor and fine hex profile provide controlled torque and accurate engagement for precision adjustment, maintenance and repair tasks that require a very small hex key.

Advantages

The one-piece construction ensures rigidity and consistent alignment with the hex recess, reducing the risk of rounding small fasteners. The short 31 mm length gives good fingertip control in confined spaces while still providing sufficient leverage for light adjustment. The 0.71 mm head size matches miniature hex hardware used in watches, cameras, small electronics and instrument assemblies, allowing precise turns without slipping. The simple, durable design requires minimal maintenance and is suitable for repeated use in workshop or field environments.

Suitable for

• Assembly and disassembly of small electronics and circuit boards
• Adjustment of precision instruments and optical equipment
• Repair and maintenance of cameras, watches and handheld devices
• Tightening or loosening miniature hex fasteners in delicate assemblies

Key specifications

• Hex size: 0.71 mm
• Overall length: 31 mm
• Construction: single-piece solid hex key
• Intended use: manual turning of miniature hex fasteners
• Application areas: electronics, precision instruments, small-mechanism repair

How to use

Select the 0.71 mm hex key and align the hex tip squarely with the fastener recess. Apply gentle axial pressure to seat the tip fully before turning to avoid cam-out and protect the fastener head. Use fingertip grip for precise micro-adjustments or a small holder for added leverage if necessary. Avoid applying excessive torque; this tool is intended for light tightening and fine adjustments of miniature fasteners.

Usage recommendations

Inspect the fastener recess before use and clean any debris to ensure full engagement. For repeated professional work, periodically check the tip for wear and replace the tool if the hex profile shows rounding. Store the hex key in a protective pouch or tool organizer to prevent tip damage and to keep the 0.71 mm tip precise for future precision tasks.