Square Head High-Strength Screws Bolts Zinc Plated

ypeOTHER SCREWSMaterial10B21,40CrSurface finishZinc Plated, BlackeningHeat TreatmentHeat treatment with the material, and heat treatment with the productManufactruing ProcessWire Drawing, Cold Heading, Heat Treatment, Thread Rolling, Surface Plating, PackingLead Time10-30days, according to customer's order qty and detailed requirementsPacking500-2000pieces in a Polybag, then into a carton box, finally into a pallet, or customized