The thread of the stainless steel self-tapping lock scr […]
The thread of the stainless steel self-tapping lock screw is a common thread with an arc-shaped triangular section, and the thread surface also has high hardness. Therefore, when connecting, the screw can also tap the internal thread in the threaded bottom hole of the connected part, thereby Form a connection. This kind of screw is characterized by 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.
1. Wallboard self-tapping screws are used for the connection between gypsum wallboard and metal keel. The thread is a double-head thread, and the thread surface also has high hardness, which can be quickly screwed into the keel without making a pre-made hole to form a connection.
2. The difference between stainless steel self-drilling and self-tapping screws is that ordinary self-tapping screws must go through two processes of drilling and tapping when they are connected; while self-drilling and self-tapping screws are drilled when they are connected. The two processes of tapping and tapping are combined and completed at one time. It uses the drill bit in front of the screw for drilling, and then uses the screw for tapping, which saves construction time and improves construction efficiency.
3. Pan-head and hexagon-head stainless steel self-tapping screws are suitable for occasions where the drill bit is allowed to be exposed. Hexagon-head self-tapping screws can have a larger torque than pan-head self-tapping screws. Countersunk head and hexagon socket tapping screws are suitable for occasions where the nail head is not allowed to be exposed. Hexagon socket head tapping screws can bear a larger torque than countersunk head self-tapping screws; semi-recessed countersunk head tapping screws are suitable for slightly exposed nail heads. Occasions. When assembling and disassembling self-tapping screws, slotted self-tapping screws need a flat-head screwdriver, cross-slot self-tapping screws need a cross-shaped screwdriver, and internal hexagonal flower-shaped self-tapping screws need an internal hexagonal flower-shaped wrench, hex head Self-tapping screws need to use open wrenches, box wrenches, socket wrenches or adjustable wrenches.