Hex key Proline 5 mm, model 48530, single-piece metric Allen key

Proline hex key model 48530 is a single-piece metric Allen key with a 5 mm tip designed for engaging hexagon socket fasteners. The tool provides a compact, straight-shaft design that fits common bolts and screws used in furniture assembly, machinery maintenance, bicycle repairs and DIY projects. Its single-key format makes it easy to store in a toolbox or carry in a pocket for on-the-spot adjustments.

Advantages

The 5 mm Proline hex key offers precise engagement with hex sockets, reducing the risk of rounding fastener heads. Its one-piece construction provides consistent torque transfer and durability under typical workshop and household use. The compact size ensures accessibility in confined spaces and convenient portability without additional pivot mechanisms or handles.

Suitable for

• Assembling and disassembling furniture with metric hex fasteners
• Routine bicycle maintenance and component adjustments
• General machinery and equipment maintenance in workshops and garages
• Small repair and DIY tasks around the home

Key specifications

• Tip size: 5 mm (metric)
• Design: single-piece, straight hex key
• Intended fastener type: internal hex (Allen) socket
• Typical applications: assembly, maintenance, repairs
• Form factor: compact, pocket-friendly

How to use

Insert the 5 mm tip fully into the hex socket of the fastener to ensure a secure fit before applying torque. Apply steady, controlled force to tighten or loosen the fastener; avoid sudden jerks to reduce the chance of stripping. For increased leverage when loosening tight fasteners, use a longer lever or a handle designed for hex keys, taking care not to exceed the tool's intended torque capacity.

Usage recommendations

Keep the hex key clean and free of debris; inspect the tip for wear before use. Use the correct 5 mm size to prevent damage to fasteners, and store the tool in a dry place to limit corrosion. For heavy-duty or high-torque tasks, choose a suitable handle or a multi-piece set with longer arms to distribute force safely.