Simpson HDIA31 5/16" Hollow Drop-In Anchor - Zamac 3, Pkg 50 ABA/ABU/ABW Adjustable Post Bases SSTB anchor bolts deliver the

SSTB anchor bolts deliver the dependable performance needed for critical structural connections

Pre-notched cone: Ensures quick and secure pipe fitting

Code Compliant: Designed to meet modern structural framing requirements

load-rated fastening solution for preservative-treated decking applications

Simpson HDIA31 5/16" Hollow Drop-In Anchor - Zamac 3, Pkg 50 ABA/ABU/ABW Adjustable Post Bases SSTB anchor bolts deliver theThe 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.