Simpson HDIA31 5/16" Hollow Drop-In Anchor - Zamac 3, Pkg 50 ABA/ABU/ABW Adjustable Post Bases Installing metal roofing

Installing metal roofing

enhancing strength and stability

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

The Simpson Strong-Tie APHH46 nominal 4x6 Concealed Flange Heavy Joist Hanger delivers the perfect blend of structural performance and rustic aesthetics

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

Simpson HDIA31 5/16" Hollow Drop-In Anchor - Zamac 3, Pkg 50 ABA/ABU/ABW Adjustable Post Bases Installing metal roofingThe 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.