Hot-Sale Black Phosphated Bugle Head Drywall Screw/ screws made in china | |
| Material | carbon steel, |
| Dimension | As customer's requires |
| Head shapes | Buldge head |
| Driver types | cross recessed |
| Finish | Yellow zinc,Hot Dip Galvanized.... |
| Features | Good anti-corrosion ability |
| Case hardness | Not less than 450HV |
| Core hardness | 270HV~390HV |
After-sale service | If there are any quality problems, please contact with us at once |













