The role of self-tapping screws
Jun 23,2022 /
BY DEVELOPERS
Self-tapping screws are also mostly used for the connection between thin metal plates. The thread is an ordinary thread with an arc-shaped triangular section, and the thread surface also has high hardness, so when connecting, the screw can also tap the inner thread in the threaded bottom hole of the connected piece to form a connection. This kind of screw is characterized by low screw-in torque and high locking performance, which has better working performance than ordinary self-tapping screws, and can be used instead of machine screws.
Wallboard self-tapping screws are used for the connection between gypsum wallboard, etc. and metal keels. The thread is a double-headed thread, and the thread surface also has high hardness (≥HRC53), which can be quickly screwed into the keel without making a prefabricated hole to form a connection.
The difference between self-drilling self-tapping screws and ordinary self-tapping screws is that when ordinary self-tapping screws are connected, they must go through two processes: drilling (drilling threaded bottom holes) and tapping (including fastening connections); while self-drilling self-tapping screws When the screw is connected, the two processes of drilling and tapping are combined and completed at one time. It first drills with a drill bit in front of the screw, and then uses the screw for tapping (including fastening connections), which saves construction time and improves construction efficiency.
Pan head and hexagon head self-tapping screws are suitable for situations where the nail head is allowed to be exposed. Hexagon head self-tapping screws can bear a larger torque than pan head self-tapping screws. Countersunk head and hexagon socket self-tapping screws are suitable for situations where the nail head is not allowed to be exposed. Hexagon socket self-tapping screws can bear a larger torque than countersunk head tapping screws; the occasion. When installing and disassembling self-tapping screws, slotted self-tapping screws need a flat-blade screwdriver, cross-recessed self-tapping screws need a cross-shaped screwdriver, hexagon socket self-tapping screws need a socket wrench, hexagonal head self-tapping Screws need to use a fixed wrench, a Torx wrench, a socket wrench or an adjustable wrench.
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