Frequently Asked Questions
What type of drop‑in anchor should I use indoors?
What type of drop‑in anchor should I use indoors?
For dry internal environments, zinc and yellow plated drop‑in anchors are usually the best choice because they provide a strong mechanical grip and a clean flush finish without needing corrosion‑resistant materials.
Do I need stainless steel anchors if the fixing is outdoors?
Do I need stainless steel anchors if the fixing is outdoors?
Yes, outdoor or coastal installations benefit from A4‑316 stainless steel anchors. They offer marine‑grade corrosion resistance and are ETA‑approved for cracked and non‑cracked concrete, giving long‑term reliability in harsh conditions.
Why do drop‑in anchors need a setting punch?
Why do drop‑in anchors need a setting punch?
Drop‑in anchors rely on a deformation‑controlled expansion mechanism. Striking them with a setting punch forces the internal wedge to expand against the concrete walls, creating a secure mechanical lock that prevents spinning or over‑insertion.
