Countersunk head screw is also called countersunk head screw, also known as flat machine screw, is a kind of building parts. The head is a 90-degree cone, similar to common wood screws. The head has a tool tightening groove, including a shape, a cross, an inner hexagon, a quincunx, a pentagon, etc.
The screw is used to connect two objects of the connector, the general screw head will be protruding in the upper surface of the connected object, so that the surface loses smoothness. Countersunk head screws can be sunk below the surface to make the surface smooth. Countersunk holes need to be drilled in the corresponding position of countersunk head for harder objects. In short, countersunk head is the head of a screw installed to keep the surface flat.
Countersunk head screw, also known as flat machine screw, its head is a 90-degree cone, similar to the common wood screw, the head has a tool tightening groove, a zigzag, cross, inner hexagonal and so on.
Effect of
On the surface of the mounting hole on the connector, there is a 90 degree conical circular socket, and the head of the screw is in this circular socket, flush with the surface of the connector. Flat screw in some occasions there are also semiciron-head flat screw, this screw is more beautiful, for the surface can allow a little protruding place.
Screws are used to connect two or more objects and are indispensable in daily life or industrial manufacturing. Countersunk head bolts (with grooves), countersunk head bolts (with tenons).