stainless steel commercial flat washers are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. Commercial flat washers generally have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resist ance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel. Stainless Steel Washer,Ss Washer,Stainless Steel Square Washers,Black Metal Washers Taizhou Hongchuang Hardware Co., Ltd. , https://www.jstaizhouhongchuang.com
Technical transformation and development of coordinate measuring machine
In March 1992, at the First Measurement and Testing Research Center of the Beijing National Defense Science and Technology Commission, the Foreign Instrument Application Technology Committee of the China Metrology and Testing Society organized a seminar on the application, maintenance and software development of the CMM. Play the role of the coordinate measuring machine, promote scientific research results, and exchange experiences. We have selected four articles from the exchange papers, hoping to give readers some useful enlightenment and help.