• High-Strength Bolts: These expansion bolts are designed for medium to high hardness rocks, offering reliable anchorage with a minimum breaking strength of 25kN, meeting EN959:2007 standards.
• Rock Compatibility: Ideal for sandstone and similar materials, these bolts are not recommended for soft rocks like limestone or for coastal use due to potential corrosion issues in non-marine grade SS304.
• Durable Construction: The bolts are crafted from stainless steel 304, ensuring durability in outdoor environments but requiring marine-grade steel for coastal areas or custom applications.
• Installation Guidelines: Ensure bore depth of 95mm in rock, with a placement length of 87mm, for optimal performance. Use M10 bolts for very hard rocks like granite (compressive strength >75MPa).
• Safety Assurance: Hangers paired with these bolts are rigorously tested, ensuring a minimum breaking load of 25kN, and have a proven track record of not failing under loads of up to 38kN.

The Dynamo Expansion Bolt is a stainless steel wedge-type anchor ideal for medium to high hardness rocks like sandstone. With a 12mm diameter and 95mm recommended bore length, it offers robust outdoor durability, though it?s not marine grade. Ensure compatibility with base rock strength; avoid soft rocks like limestone. Not suited for coastal areas; contact us for custom marine-grade options. Tested to meet EN959:2007 standards, this bolt ensures a minimum breaking strength of 25kN, providing reliable and secure anchorage for your projects.