Simpson Strong-Tie HDIA31

The Simpson Strong-Tie® HDIA hollow drop-in anchor is an internally threaded, flush-mount expansion anchor designed for attaching threaded rod to support a variety of conduit, cables and lighting. This anchor is ideal for use with hollow base materials such as CMU and hollow-core plank as well as in solid base materials such as brick and both normal-weight and lightweight concrete. The HDIA can easily be installed in both hollow and solid materials with a setting tool.