Hexagonal Flange Galvanized Color Zinc Screw Diameter 5.5mm Self
Our products of hexagonal drlling screw inclued:5.5*30, 5.5*32,
5.5*35, 5.5*38, 5.5*40, 5.5*45, 5.5*70 etc.Thread tolerances is 4h.
Surface treatment is electro galvanizing. The range of packing
quantity from 2200 pieces/bag to 5600 pieces/bag.
According to the tail, the self drilling screws are divided into:
hexagon head, countersunk head, plum flower head, round head,
trumpet head, and so on.
The tail of the self drilling screws are drilled or pointed tail,
which can directly drill, tapping and locking on the material and
basic material, and greatly save the construction time. Compared
with ordinary screw, its toughening force and maintenance force are
high. And over a period of time, the self drilling screws will not
be loose after combination.
Types of heads