What is A4-70 bolt?

An A4-70 bolt is a type of stainless steel fastener that is commonly used in marine and high-corrosion environments. The "A4" designation indicates that it is made from austenitic stainless steel, which provides Excellent resistance to corrosion. The "70" refers to the minimum tensile strength of the bolt, which is 700 MPa. A4-70 bolts are often used in applications where durability and resistance to harsh conditions are essential.