How many studs need to be bend tested and visually inspected at the beginning of production?

At the beginning of production, it is important to perform both visual inspections and bend tests on a sample of studs to ensure quality and compliance with specifications. Conducting tests on two studs allows for a balance between obtaining enough data to ensure a high level of confidence in the production quality while managing resource costs effectively.

Testing a greater number could provide a more thorough assessment, but two is often considered an industry-standard minimum that is manageable at the start of a production run, allowing for prompt identification of any issues or defects in the manufacturing process. This practice ensures that any potential problems are addressed early, contributing to overall safety and reliability in the final product.