Zinc plated drop in anchors are internally threaded expansion anchors designed for medium duty fixing in concrete. Drop in anchors are to be placed into a hole and struck with a hammer and drop in anchor setting tool until the top of the anchor is flush with the concrete. This causes the anchors shield to expand into the sidewall of the hole, a bolt or threaded rod is then threaded into the anchor providing a strong reliable connection. Drop in anchors are commonly used for anchoring plumbing, electrical and HVAC components.
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