"用螺钉固定" can be translated into English as "fasten with screws" or "secure with screws".
Both expressions are commonly used to describe the action of attaching or holding something firmly in place using screws. For example:
"The parts should be fastened with screws to ensure stability." （部件应该用螺钉固定，以确保稳定性。）
"Secure the bracket to the wall with screws." （用螺钉将支架固定在墙上。）