The Naval Undersea Warfare Center (NUWC) requires a reliable and repeatable method for testing flat head fasteners under tensile loading. To improve accuracy and consistency in evaluating these fasteners, this project aims to design, fabricate, and demonstrate a universal test fixture. The fixture will be compatible with an Instron-type testing machine and capable of accommodating flat head fasteners with 82-degree and 100-degree head angles. It must also support various fastener diameters to ensure wide range of compatibility in testing. The outcome of this project will provide a standardized approach for tensile testing fasteners in a safe and repeatable manner.