Simpson Strong-Tie MPAI44 45-1/2" Masonry Purlin Anchor for I-Joist - Galvanized Specialty Self-Drilling Screws The countersunk head allows flush-mount

The countersunk head allows flush-mount fastening ideal for thresholds

Beam-to-Beam Connections: Ensures stability in structures with intersecting beams at various angles

No pre-drilling required in most wood applications

Residential metal roofing projects

When the resin encounters water as it is injected into the crack

Simpson Strong-Tie MPAI44 45-1/2" Masonry Purlin Anchor for I-Joist - Galvanized Specialty Self-Drilling Screws The countersunk head allows flush-mountThe Simpson Strong Tie MPAI Masonry Purlin Anchor is engineered to provide a secure, code approved wood to concrete and wood to masonry connection for open web truss and I joist applications. Specifically designed for open web truss joint connections to concrete or masonry walls, the MPAI creates a reliable load path that transfers uplift and lateral forces from roof framing into the supporting structure. Built to accommodate the geometry of open web