These IND Hex Slot Type S Zinc 8X9/16. 1000PK feature a Hex Slot Type S design, which allows for a secure grip during installation. This design ensures efficient fastening and minimizes the risk of slippage, making your projects safer and more efficient. The zinc-plated finish not only provides a sleek appearance but also offers excellent corrosion resistance. These screws are suitable for both indoor and outdoor applications, ensuring longevity and reliability in various environments.