Wall screw:
1) Material: AISI-C1022
2) Material properties: surface carburization 0.1mm

Wall screw:
1) Material: AISI-C1022
2) Material properties: surface carburization 0.1mm

3) Surface treatment: electric zinc, phosphating

4) Examination: passed the salt-fog test more than 48 hours.

5) Product spec: M3.5X25, M3.5x30, M3.5X35, M3.5X40, M3.5X45, M3.5X50, M3.9X11, M3.9X32 etc.

We can make any size by orders.