Hex key Proline 48574 — metric 10 mm, single-piece

Proline 48574 is a single-piece metric 10 mm hex key designed for driving hexagonal socket screws and bolts. Manufactured by Proline for manual fastening and loosening tasks, this tool is intended for general maintenance, installation and repair work where a compact, robust hand tool is required. The hex key is heat-treated and tempered for strength, with a polished chromium finish that improves corrosion resistance and provides a smooth surface for handling.

Advantages

The single-piece construction offers dimensional stability and consistent torque transfer when turning fasteners. Heat treatment and tempering increase hardness and reduce the risk of deformation under load. The polished chromium finish gives enhanced protection against corrosion and makes the tool easier to clean after use. Its compact form factor allows access to confined spaces and simple storage in tool rolls or pockets.

Suitable for

• Assembling and disassembling machinery and equipment with 10 mm hex sockets
• Furniture assembly and joinery that use metric hex bolts
• Maintenance and repair tasks in workshops, garages and technical service jobs
• Field service applications where a durable, single-piece hand tool is needed

Key specifications

• Type: single-piece metric hex key (allen key)
• Size: 10 mm across flats
• Material treatment: quenched and tempered for increased hardness
• Surface finish: polished chromium for corrosion resistance
• Drive: hexagonal socket driver for internal hex fasteners

How to use

Select the 10 mm hex key and insert the short or long end into the hex socket of the screw or bolt until it seats fully. Apply steady, controlled force to turn the key clockwise to tighten or counterclockwise to loosen, taking care to keep the tool aligned with the fastener to avoid rounding the socket. For higher torque, use the longer arm for increased leverage; for restricted spaces, use the shorter arm. Inspect the tool and fastener before use to ensure a correct fit and avoid slippage.

Usage recommendations

Do not apply impact forces or use the hex key as a pry bar. Clean and dry the tool after use and store in a dry location to maintain the polished chromium finish. Replace the hex key if the edges of the hex show rounding or excessive wear to prevent damage to fasteners.