PS Hardware is a High Precision Striped Rolled Knurling Stationary manufacturer specializing in designing high quality knurling designs that comply with the standard of accuracy and functionality that are globally recognized. Our Screws and Bolts Striped Rolled Knurling can be used in the automotive, aerospace, or construction industries and is guaranteed to provide the industry with ... https://www.pshardware.com/category/knurling-amp-design