According to the different materials used for the screws, it can be divided into: iron screws, stainless steel screws, copper screws, aluminum screws, alloy steel screws, and plastic screws. According to the different industries of the screw, it can be divided into: electronic screw, electromechanical screw, furniture screw, bathroom screw, China Drywall Screw Suppliers medical screw, automobile screw, aviation screw and so on.
Fourth, according to the screw head groove type, it can be divided into: hexagon socket screw, cross recessed screw, slotted screw, Phillips screw, and non-slotted screw. According to the screw thread and tail shape, it can be divided into: machine screw, self-tapping screw, wood screw, pointed screw, and self-drilling screw.. According to the screw head type, it can be divided into: hexagon head screw, countersunk head screw, pan head screw, large flat head screw, round head screw, cylinder head bolt, square head screw and ball head screw.
According to the specifications and shapes of the screws, they are classified into standard parts, non-standard screws, and special screws; According to the definition of screw, it includes the following 12 kinds of parts: bolts, studs, nuts, screws, self-tapping screws, wood screws, washers, retaining rings, pins, rivets, assemblies and connections, and welding nails.
What are the classifications of screws? The screw factory summarized the following: The screw is a tool that uses the physics and mathematics of the oblique circular rotation of the object and the friction force to gradually tighten the objects and parts.
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