Simpson Strong-Tie #12 x 1-1/2" Self-Drilling Screw, Hex-Washer Head - 316 Stainless Steel, Qty. 100 Hex Head 410 Stainless Steel Masonry Screws Two versions of the MASA

Two versions of the MASA are available the standard MASA for installation on standard forms and the MASAP for panelized forms

The Simpson ECCLLQ3

Manufactured from 410 stainless steel for added strength and corrosion resistance

Residential and commercial construction projects requiring wall bracing

Mass timber projects where concealed beam-to-column connections are preferred

Simpson Strong-Tie #12 x 1-1/2" Self-Drilling Screw, Hex-Washer Head - 316 Stainless Steel, Qty. 100 Hex Head 410 Stainless Steel Masonry Screws Two versions of the MASABuilt to stand up to the harshest environments, the Simpson Strong Tie T12150HDUC Self Drilling Hex Washer Head Screws in 316 stainless steel offer unmatched corrosion resistance for demanding applications. These screws are engineered for fastening into 16 to 12 gauge steel, eliminating the need for pre drilling and streamlining your installation. Whether you're working in coastal construction, wastewater facilities, or any high exposure environment,