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...
Stainless steel bolt : outside the hexagon..
stainless steel bolt8
stainless steel bolt
Stainless steel bolt
Stainless steel bolt3
Stainless steel bolt: outside the hexagon ..
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