For high-strength self drilling screws, you should know […]
For high-strength self drilling screws, you should know something about it, but do you know the characteristics of high-strength self-tapping screws?
The biggest difference between high-strength self-tapping screws and ordinary self-tapping screws is the difference in mechanical properties such as hardness and tensile strength. General fasteners, for screws above 8.8, are called high-strength screws, and screws below. For ordinary screws.
The high-strength self-tapping screws first have high strength, and the head shape of the screw has a round head, a flat head, a semi-recessed head and a countersunk head. With low screwing torque and high locking performance, it has better working performance than ordinary self-tapping screws and can be used instead of machine screws.
Since the threaded surface of the tapping screw has a high hardness, the internal thread can be tapped in the threaded bottom hole of the connected member to form a joint. Self-tapping screws are often exposed to the outside and have a strong corrosion resistance.