Self-tapping screw is a kind of screw used to connect metal materials and plates. It has many types, such as self-tapping pin screw, wallboard self-tapping screw, self-tapping screw, pan head and hexagon head self-tapping screw, etc. Each self-tapping screw has different uses. Next, we will briefly introduce these.
1. Self-tapping fastening screws are also used to connect thin metal plates. The thread is a common thread with an arc triangle section, and the surface layer of the thread also has a high hardness standard. Therefore, during the connection, the screw can also tap the internal thread in the bottom hole of the thread of the connected part, thus creating a connection. This type of screw is characterized by low screw-in torque and high locking characteristics. It has better working characteristics than ordinary self-tapping screws and can be used instead of machine screws.
2. The wall panel self-tapping screw is used as the connection between the gypsum wall panel and the metal keel. The thread is double-headed, and the surface layer of the thread also has a high hardness standard (≥ HRC53), which can be quickly screwed into the keel without making prefabricated holes, thus creating a connection.
3. The difference between self-drilling self-tapping screw and general self-tapping screw is that the connection of general self-tapping screw must go through two processes: drilling (drilling thread bottom hole) and tapping (including fastening connection); When the self-drilling self-tapping screw is connected, the two processes of drilling and tapping are combined. It first uses the drill bit in front of the screw to complete the drilling, and then uses the screw to complete the tapping (including the fastening connection), which saves the construction time and improves the construction efficiency.
4. Pan-head and hexagon-head self-tapping screws are more suitable for places 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. The countersunk head and hexagon socket head tapping screws are more suitable for places where the screw head cannot be exposed. The hexagon socket head tapping screws can bear more torque than the countersunk head tapping screws; The semi-sunk head self-tapping screw is more suitable for places where the screw head is allowed to be slightly exposed. When assembling and disassembling self-tapping screws, slotted self-tapping screws shall use slotted screwdrivers, cross-recessed self-tapping screws shall use cross-shaped screwdrivers, hexagonal torx self-tapping screws shall use hexagonal torx wrenches, and hexagonal self-tapping screws shall use solid wrenches, ring wrenches, socket wrenches or adjustable wrenches.
Post time: Feb-03-2023