Hex key Proline 6 mm — Proline 48479, single metric Allen key

Proline 6 mm hex key (single metric Allen key) is a hand tool intended for fastening and loosening hex socket screws and bolts with a 6 mm drive. Made from quenched and tempered steel with a polished chromium finish, this single-piece hex key offers a compact profile that fits into tight spaces and can be carried in a toolbox or pocket for maintenance and assembly tasks.

Advantages

The hardened and tempered steel core provides strength and wear resistance for repeated use. The polished chromium finish improves corrosion resistance and gives a smooth surface that resists dirt buildup. Its single, full-length design ensures direct torque transfer from hand to fastener and reduces the risk of rounding the screw head when used correctly.

Suitable for

• Furniture assembly and adjustment
• Bicycle maintenance and repairs
• General machinery and equipment maintenance
• Domestic repair and DIY tasks requiring a 6 mm hex drive

Key specifications

• Drive size: 6 mm hex
• Material treatment: quenched and tempered steel
• Surface finish: polished chromium
• Construction: single-piece, metric Allen key
• Use type: manual hand tool for hex socket fasteners

How to use

Insert the 6 mm hex key into the corresponding hex socket of the screw or bolt until it seats fully. Apply steady manual torque in the required direction to tighten or loosen the fastener. For stubborn or heavily torqued fasteners, ensure the key is fully engaged and use controlled, incremental force to avoid slipping or rounding the fastener head. Keep the tool clean and free of debris to maintain a secure fit.

Usage recommendations

Use the hex key for applications matching its 6 mm drive size and avoid applying excessive torque beyond hand force; for higher torque requirements, use a tool designed for leverage or a socket-based solution. Store the key dry to maintain its polished chromium finish and periodically inspect for wear before use.