A general rule: bolt length = material thickness being fastened + minimum embedment depth into the base material. For concrete, embedment is typically 4–6× the bolt diameter. For example, an M10 bolt anchoring a 10mm bracket into concrete generally needs at least 40–60mm of embedment, so a 100mm (≈3.9") bolt is a common starting point. Always consult the structural load requirements for your specific project.

Load capacity depends on bolt diameter, embedment depth, and base material strength. Generally, M8 anchors in standard concrete (C20) carry roughly 3–5 kN in tension; M12 anchors typically handle 6–10 kN. These are indicative ranges — actual capacity varies with installation quality and concrete grade. Always verify with a structural engineer for safety-critical applications.

304 stainless steel offers good corrosion resistance for most outdoor and mildly humid environments. For coastal areas with regular salt spray, 304 SS generally performs well for moderate exposure. 201 SS is better suited for dry or lightly exposed indoor/outdoor use. Neither grade is recommended for continuous saltwater immersion — for that, 316 SS would typically be specified.

These bolts use standard metric coarse threads (ISO metric). M8, M10, M12, M16, and M20 designations follow DIN/ISO standards, making them compatible with standard metric nuts, washers, and fixtures widely available in the US and internationally. No special tools or proprietary hardware are required.

A Type is a standard sleeve expansion anchor with a flat or hex head, designed for through-bolt or surface-mount applications where the fixture sits flush against the base material. B Type features an extended shank or hook configuration, suited for hanging fixtures, pipe supports, or applications requiring a protruding anchor point above the surface. Check the variant images to confirm the head style for your use case.

Yes, expansion anchor bolts can generally be used in solid brick, concrete block, and stone. However, load ratings in hollow block or soft brick are significantly lower than in solid concrete. For hollow masonry, a sleeve anchor or hollow-wall anchor is typically more appropriate. Always test pull-out strength before applying full load in any masonry application.

Drill a hole matching the bolt diameter (e.g., a 10mm carbide masonry bit for M10) to the required depth. Clear dust and debris from the hole using compressed air or a brush. Insert the anchor bolt and hand-tighten the nut. Then torque the nut to specification — the sleeve expands against the hole wall as the nut is tightened, creating the mechanical lock. Recommended torque is typically 20–50 Nm for M10–M12; consult torque specs for your specific diameter.