
CSK flat socket head screws are typically manufactured from a diverse range of materials, each selected to meet specific performance requirements. Carbon steel is a commonly used material for general – purpose applications. Grades such as 4.8, 8.8, and 10.9 are frequently employed.
Hebei Fujinrui Metal Products Co., Ltd. was established in 2004 and is located in Handan City, Hebei Province. The company covers an area of 10,000 square meters and has a staff of more than 200 people. It is an enterprise integrating fastener product production and metal surface corrosion protection, with a mature production technology team. More than 20 years of experience in the fastener industry.