Simpson #9 x 4" 305 SS Deck-Drive DWP Wood Screw, T20, Trim Head PACK:5 Lb as indicated by the "66"

as indicated by the "66" in the model name ECCQ66SS-SDS2

length at #7 screw size - provides reliable holding depth for deck board and trim fastening without overdriving or mushrooming the wood surface

and ground gear drive system

Engineered Wood is a heavy-duty connector from Simpson Strong-Tie engineered for structural composite lumber (SCL) header applications that demand high load capacity

This screw is manufactured from Type 316 stainless steel

Simpson #9 x 4" 305 SS Deck-Drive DWP Wood Screw, T20, Trim Head PACK:5 Lb as indicated by the "66"Simpson Deck Drive DWP Wood Screw in Type 305 Stainless Steel by Simpson is engineered for deck, dock, and general exterior wood fastening applications where reliable corrosion protection is essential. Featuring a trim head profile, T20 6 lobe drive, and sharp point tip, this #9 x 4" screw drives cleanly into wood decking, fascia, and trim boards with minimal splitting or surface damage. The Type 305 stainless steel construction resists rust and