Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" BN The zinc-plated finish provides a

The zinc-plated finish provides a layer of corrosion resistance

MPN: CSD25400MG

The Simpson HGUS5

more consistent results across large decking projects

Simpson HDIA37 Hollow Drop-In Internally Threaded expansion Anchor 3/8" BN The zinc-plated finish provides aThe 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