Socket 70 mm 3/4" 6-point for heavy-duty fasteners, Corona FK-56570

Corona FK-56570 is a 70 mm, 6-point socket with a 3/4" drive designed for tightening and loosening large hex fasteners. The tool provides full six-surface contact with nuts and bolts to improve torque transfer and reduce the risk of rounding. Intended for use with heavier drive tools, this socket suits automotive, industrial maintenance and construction environments where robust fastener engagement and higher torque capacity are required.

Advantages

The six-point geometry ensures even load distribution across the flats of hex fasteners, improving grip and decreasing wear on fastener edges. The 3/4" drive delivers compatibility with heavy-duty ratchets and torque wrenches, enabling higher applied torque with stable engagement. A 70 mm opening accommodates large nuts and bolts commonly found on trucks, machinery, and structural assemblies. The socket is built for frequent professional use, with dimensions and contact surfaces optimized for reliable performance under torque.

Suitable for

• Tightening and loosening large hex nuts and bolts on commercial vehicles
• Maintenance and repair of industrial machinery and equipment
• Assembly and disassembly of structural fasteners in construction
• Use with 3/4" drive torque wrenches and heavy-duty ratchets

Key specifications

• Socket opening: 70 mm
• Point configuration: 6-point (hex)
• Drive size: 3/4"
• Intended application: heavy-duty fasteners, large hex nuts and bolts
• Typical use environments: automotive, industrial maintenance, construction

How to use

Select a compatible 3/4" drive ratchet or torque wrench and ensure the tool is set to the correct torque value if required. Seat the socket fully onto the hex fastener, making sure the six contact surfaces align with the flats of the nut or bolt. Apply steady torque, avoiding sudden impacts or excessive force beyond the torque rating of the fastener or tool. After use, inspect the socket for wear or deformation and store in a dry, organized location.

Usage recommendations

For safe and effective operation, use the socket only with tools rated for 3/4" drives and within the torque limits appropriate for the fastener material. Avoid using the socket with improperly sized or rounded fasteners, and replace the socket if signs of cracking, rounding of contact edges, or significant deformation appear.