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The M5 x 20 screw specification indicates a nominal diameter of 5 millimeters and a thread length of 20 millimeters. The M denotes metric, which refers to the measurement system used for its size. This screw typically has a hexagonal head, allowing for easy grip and application of torque without slipping. Depending on the application, it can come with different head types such as pan, round, or countersunk, each serving a unique purpose in assembly processes.

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HEBEI YUETONG FASTENERS 1 8 hex nut dimensions