Stainless steel screws usually refers to the resistance to air, water, acid, alkali or other media corrosion ability of steel screws, generally not easy to rust...
High strength screws are made of high strength steel or require large pre-tightening force. They are widely used in Bridges and rails...
Guide：
DIN BOLT Specification:M2-M24 Materi..
DIN BOLT
DIN bolt
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