Hillman 5/16 X 6-3/4 In. Trusstite™ Hex Washer Screw is specially designed for connecting lightweight steel framing through pre-drilled or pre-punched holes. These screws are for assembling steel roof trusses as well as floor trusses where pre-punched holes are present, ensuring a secure and reliable fastening solution for your construction needs. Their durable design makes them an excellent choice for structural applications requiring strength and precision. Model Number: