Stainless Steel Masonry Concrete Expansion Anchor Bolt — M6 M8 M10 M12 M16 | 304 & 201 SS

A general rule: the anchor should embed at least 4–6 times its diameter into the base material. For example, an M8 bolt typically needs at least 32–48mm (≈1-1/4" to 1-7/8") of embedment. Add the thickness of the fixture to get your total bolt length. For a 10mm bracket with an M8 bolt, you'd generally want a length of at least 50–60mm (≈2" to 2-3/8"). When in doubt, go longer — excess length can be accommodated with a nut and washer.

Load capacity depends on the bolt diameter, embedment depth, and the compressive strength of the base material. In general, M6 anchors are suited for lighter loads (typically fixtures and brackets), while M12 and M16 anchors can handle significantly heavier structural loads in solid concrete. For critical or load-bearing applications, always consult a structural engineer and refer to the specific anchor's published load tables.

Yes. Both 304 and 201 stainless steel offer corrosion resistance well beyond standard zinc-plated anchors. 304 SS is generally preferred for outdoor, coastal, or consistently humid environments. 201 SS is suitable for indoor or mildly damp conditions. For marine or highly aggressive chemical environments, 316 SS is typically recommended instead.

304 stainless steel contains approximately 18% chromium and 8% nickel, giving it superior corrosion resistance — it's the standard choice for outdoor or demanding environments. 201 SS substitutes some nickel with manganese, making it more economical while still providing decent corrosion resistance for indoor or light-duty applications. If you're unsure, 304 SS is the safer long-term choice.

Yes. These bolts use standard ISO metric coarse threads. M6, M8, M10, M12, and M16 designations refer to the nominal thread diameter in millimeters and are fully compatible with standard metric nuts, washers, and fixtures. No special hardware is required.

Style #1 and Style #2 refer to different anchor sleeve or expansion mechanism profiles. #1 is generally a standard single-expansion sleeve design, while #2 typically features a different sleeve geometry suited for specific base material densities or installation depth requirements. Please refer to the product images for visual reference, or contact us to confirm which style best suits your application.

These expansion anchor bolts are designed for use in solid concrete, brick, natural stone, and dense masonry block — the most common substrates for concrete anchor bolt applications. They are generally not recommended for hollow block, aerated lightweight concrete (AAC), or soft materials without reviewing load specifications, as the expansion mechanism requires a solid substrate to grip effectively.