5/8" x 2-1/2" Strong-Tie Drop-In Anchor, 303 Stainless Steel, Pkg 25 Underlayment & Subfloor Screws It features a patented undercutting

It features a patented undercutting thread design that taps into uncracked and cracked concrete for a secure mechanical connection

The hex washer head provides solid bit engagement and a finished look without needing separate washers

This product is intended for use with Rough Cut 8x8 lumber but is also available in other sizes

The Simpson Strong-Tie HU series joist hangers are engineered for a wide range of structural applications

The CJTZ package is supplied with all dowels and screws required

5/8" x 2-1/2" Strong-Tie Drop-In Anchor, 303 Stainless Steel, Pkg 25 Underlayment & Subfloor Screws It features a patented undercuttingSimpson Drop In expansion anchors are internally threaded anchors designed to be used in solid base materials. These anchors are made of 303 stainless steel for added corrosion resistance. California Residents: WARNING