Simpson HDIA31 5/16" Hollow Drop-In Anchor - Zamac 3, Pkg 50 ABA/ABU/ABW Adjustable Post Bases Designed for structural and general

Designed for structural and general framing applications

Quik Guard® Coating – Provides strong corrosion resistance for long-term durability in outdoor builds

Fastening Requirements: Use all specified fasteners according to manufacturer guidelines for secure attachment

It integrates seamlessly with the full Outdoor Accents hardware line

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 Designed for structural and generalThe 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.