Hex key Proline 7 mm — Proline 48490 single hex key

Proline 7 mm hex key model 48490 is a single-piece hand tool designed for tightening and loosening metric hex-head fasteners sized 7 mm. The tool is quenched and tempered for strength and finished with polished chromium for corrosion resistance and smooth handling. Compact and rigid, this 7 mm hex key is intended for straightforward fastening tasks in assembly, maintenance and repair work where a reliable metric Allen key is required.

Advantages

The hardened and tempered construction provides enhanced durability and resistance to bending under torque, while the polished chromium finish reduces surface corrosion and improves ease of cleaning. As a single 7 mm hex key, it offers a simple, space-saving solution for applications that call specifically for that size, enabling efficient manual operation and controlled torque application.

Suitable for

• Assembly and disassembly of furniture using 7 mm hex fasteners
• Bicycle maintenance where 7 mm hex keys are specified
• Light machinery and equipment servicing with metric hex bolts
• Repair tasks in workshops and home garages requiring a 7 mm Allen key

Key specifications

• Tool type: single-piece hex key (Allen key)
• Size: 7 mm (metric)
• Material treatment: quenched and tempered for increased hardness
• Surface finish: polished chromium for corrosion resistance
• Design: straight hex key profile for manual use

How to use

Insert the hex key into the 7 mm hex recess of the fastener, ensuring full engagement of the hex profile to minimize wear and rounding. Apply steady manual torque in the required direction to tighten or loosen the fastener. Use the short end for higher torque or the long end for reach and leverage when the design allows. Avoid applying impact loads or using the tool as a lever beyond its intended capacity to prevent deformation.

Usage recommendations

Store the hex key in a dry place to preserve the polished chromium finish; clean off grease and debris after use. For best results, match the 7 mm hex key to correctly sized fasteners and inspect the tool periodically for signs of wear or rounded edges before critical tasks.