Countersunk screws are suitable for applications where nail heads are not allowed to be exposed, but corresponding tapered counterbore holes must be made on the surface of parts with through holes. Common in machinery, electrical appliances and buildings. Used to connect two connected parts. One of the parts is made open, and the other part is made of an internally threaded hole.
Semi-counter-sunk screws are similar to countersunk screws, but their spherical tips are slightly exposed and relatively beautiful and smooth. Commonly found in machinery, electrical appliances, and buildings, etc., it is cylindrical and has concave and convex grooves on its surface, such as a slanted surface that surrounds the side of the screw, allowing the screw to lock the screw cap or other object. The more prominent top also prevents the screws from drilling too deeply through the material and increasing the screw pressure on the material. It can usually be removed or re-inserted without sacrificing efficiency, but it also provides greater strength and can be reused.
Slotted pan head plastic screws (mm) have excellent insulation properties, non-magnetic, heat insulation, light weight, individual materials, plastic nuts also have high temperature resistance, high strength, corrosion resistance, can be used with plastic screws, and Can be used with metal screws, some models have locking function. Widely used in various industrial fields.