Simpson #7 x 3" Trim-Head Screw, Square Drive, 305 Stainless Steel Chuck & Collet Accessories Why does this column cap

Why does this column cap use SDS screws instead of standard through bolts

length) designed for use with 5-1/8 in

By virtue of the 2-chamber system and the foam rubber gasket it stays attached to almost all (even uneven) surfaces

The Deck-Drive DCU Composite Screw is engineered specifically for composite and PVC decking applications

Manufacturer Part Number (MPN): CJT4ZS

Simpson #7 x 3" Trim-Head Screw, Square Drive, 305 Stainless Steel Chuck & Collet Accessories Why does this column capSimpson Trim Head Screw, #7 x 3", Type 305 Stainless Steel, #1 Square Drive by Simpson Strong Tie is engineered for wood decking and boardwalk installations where a clean, low profile finish and lasting corrosion resistance are both essential. The trim style head sits flush with the decking surface, minimizing visual disruption while the Type 305 stainless steel construction provides reliable protection against rust and corrosion in marine,