wall screw

1)wall screw 2)Wall screw is also called triumph-head screw, and can be used to replace wood screw. Characters of wall screw:1. Wall screw is also called triumph-head screw, and can be used to replace wood screw.2. The screw head form is in the shape of triumph head, and it is designed with double-teeth-thread, and with strong catching force, for fast hole-drilling, which it brings much convenience to the field of building and construction.3. The teeth angle is generally about 60°, the pointed tail angle is about 23°-26°.The pointed tail is divided into straight tail and bullet tail.4. Screw is divided into coarse teeth and fine teeth, and fine teeth is divided into double-teeth single-out(SS) and double-teeth double out (2S).Note: P represents distance between threads.

wall screw