Flat head screw also known as countersunk head screw, screw head is flat head, is generally with cross groove, hexagon, groove, groove, such as a word groove.
Screw is generally under the screw, of course, if it is a flat head self-tapping screw, that is generally self-tapping screw.
This product adopts carbon steel wire, cold heading forming.
The surface treatment is environmentally friendly black zinc coating, salt spray up to at least 48H above.
Dongguan Tiansheng Co., LTD., specializing in the development and production of non-standard fasteners for 12 years.
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