This screw is manufactured from Type 316 stainless steel
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
Simpson Strong-Tie 4-1/8 x 11-7/8 Heavy Skewed Right Joist Hanger
and it is designed for use inside the structure so there is no need to work outside the building
Simpson #9 x 4" 305 SS Deck-Drive DWP Wood Screw, T20, Trim Head PACK:5 Lb This screw is manufactured fromSimpson 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