Simpson Strong-Ties S/HDU Light-Gauge Holdown for Steel uses Strong-Drive SDS Heavy-Duty Connector screws, which are known for their ease of installation and superior performance. These screws help to reduce fastener slip and provide a greater net section compared to traditional bolts, improving the overall strength of the connection. This holds true even in situations requiring rapid and efficient installation, making the S/HDU an excellent option for time-sensitive projects without compromising on quality.