Here is a brief explanation of the difference between wood screws and self-tapping screws:
First of all, first spread the basic concepts: screws, machine screws, machine screws. People usually use screws or even screws. The academic explanation is a type of fastener consisting of a head and a screw, usually connected to a fastener with a through hole. It does not need to be used with a nut. Self-tapping screws, also known as self-tapping screws. However, the thread is a kind of special connection thread, which is generally used for thin metal and plastic connection. A small hole can be made first, and then the member is screwed by the self-tapping screw, and the internal thread is formed in the member by the self-tapping screw. Wood screws: also known as wood screws, as the name implies, customized for wood.
From this we can see the difference between the two:
1, different uses, self-tapping screws are mostly used for metal, plastic connection, wood screws: used for the connection of wood.
2. The shape is different. The pitch of the self-tapping screws is not wider than the wood screws, and the wood screws are longer than the self-tapping screws.
3, the scope of application is different, in general, self-tapping screws and wood screws have a wide range of applications.
4, the surface hardness is different, self-tapping screw teeth than wood screw teeth, and the surface is hard. Because the hardness of the mother of the two screws is not the same.
Jiang Weixin hardware fasteners also said that both in terms of form and hardness are different, but in general, wood screws also belong to the self-tapping screws, but the special screws for the use of wood screws.