Simpson HDIA50 1/2" Hollow Drop-In Anchor - Zamac 3, Pkg 50 Deck Hangers fill the fastener hole(s) in

fill the fastener hole(s) in the bottom of the hanger seat (THASR/L29 has one and all other models have two)

High Load Capacity: The face-mount design ensures strong connections between beams and joists

including pergolas

ensuring exceptional resistance to weathering

they deliver outstanding corrosion resistance that stands up to rain

Simpson HDIA50 1/2" Hollow Drop-In Anchor - Zamac 3, Pkg 50 Deck Hangers fill the fastener hole(s) inThe Simpson Strong Tie Hollow Drop In Anchor (HDIA) is an internally threaded, flush mount expansion anchor for use in hollow materials such as CMU and hollow core plank, as well as in solid base materials such as brick, normal weight and lightweight concrete. The expansion design allows anchoring to CMU, hollow core plank, brick, normal weight concrete and lightweight concrete while the internally threaded anchor allows for easy bolt removal.