1)material :carbon steel 1022 . 2)head: countersunk head , pan head,oval countersunk 3)Size:ST2.9~6.3 4)length:13-100mm

Features:

Drilling Cap Screws was drilling or tip caudate, without auxiliary processing can be directly set materials, basic materials, drilling, tapping, locking, and significant savings inconstruction time.

Application:

1)Metal plate; galvanized steel; engineering installation.

2)Metal curtain wall; metal light compartment; steel doors and windows; indoor .

Hexagonal with washer self-tapping screws