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Contact SupplierDrywall Screw
Raw material :Carbon steel
Head type :Bugle head with 4 ribs
Thread type :Â Fine thread twinfast thread
Finish :Black Phosphate , Grey Phosphate ,Galvanized , Yellow Zinc Nickel
Standard :DIN 18182
Surface :Matt black and dry, deep thread and sharp thread ,hardened ,heat treatment
Diameter :