#8-10-12 x 3/4" Daggerz Pro-Seal EPDM Bonded Washer - Aluminum, Pkg 6000 Strut Channel or the 1 5/8" screws

or the 1 5/8" screws for fastening directly to wood

The Simpson Strong-Tie® CTRBTF04304 replacement center pilot bit is designed for use with the Simpson SDS-MAX Core Bits

With a corrosion-resistant E-coat finish for interior use

Lumber Size: Intended for use with 3-1/8x beams and 4x posts/columns and includes necessary SDS screws for quick installation

#8-10-12 x 3/4" Daggerz Pro-Seal EPDM Bonded Washer - Aluminum, Pkg 6000 Strut Channel or the 1 5/8" screwsDaggerz brand Pro Seal EPDM Bonded Washers are designed for applications that require a leakproof seal. The inside diameter of the NEOWA08034 rubber washer tightly seals to the screw. It features excellent ozone and weather resistant elastomer that provides superior aging characteristics. This EPDM washer is heat resistant up to 350 degrees Fahrenheit. The aluminum finish is great for minimizing galvanic corrosion.