Simpson Strong-Tie's HeavyDuty Mushroom Head Crimp Drive Anchors are zinc-plated for corrosion resistance and meet heavy-duty performance standards required in commercial and residential construction. The 1/4 in. diameter and 1-1/4 in. length allow for a minimum embedment of 7/8 in, providing consistent hold even under vibration or light dynamic loads. Easy to install with standard tools, this anchor delivers professional-grade performance without the guesswork.