Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" Powers Toughened Steel Construction: Crafted from

Toughened Steel Construction: Crafted from high-strength toughened steel designed to withstand the repetitive impact forces of concrete and masonry demolition

The self-drilling point drives into materials easily

For routers that are not compatible with the standard 2-inch center-to-center template guide mounting

Its black powder-coated finish delivers both reliable structural strength and a clean

Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" Powers Toughened Steel Construction: Crafted fromThe Simpson Strong Tie HDIA37 HDIA Hollow Drop In Internally Threaded Anchor is an internally threaded, flush mount expansion anchor engineered for attaching threaded rod to support conduit, cables, and lighting. Designed for versatility across both hollow and solid base materials, this anchor delivers reliable holding power in CMU, hollow core plank, brick, normal weight concrete, and lightweight concrete all with the convenience of a flush mount