Head style Countersunk. Head Style Countersunk. There is no confusion during transportation and it is convenient to use. Item Weight 330 g. Easy to Use: The surface and edge of the screw nut and flat washer are smooth and burr-free, clean and precise in use, not easy to deform and slip when in use, suitable for limited spaces, such as narrow areas where the head needs to be flush or under the surface.
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