The specifications of rivets mainly include diameter, length, head type, rod length and taper. The following is a detailed introduction to the rivet specifications:
First, diameter
The diameter of the rivet is one of its important specification parameters, which determines the bearing capacity of the rivet and the applicable scene. Common rivet diameters include 2mm, 2.4mm, 2.5mm, 3mm, 3.2mm, 4mm, 4.8mm, 5mm and 6.4mm. Rivets of different diameters are suitable for connecting materials of different thicknesses:
Smaller diameter rivets (e.g. 2mm, 2.4mm, 2.5mm) are suitable for connecting lightweight metal plates.
Rivets of moderate diameter (e.g. 3mm, 3.2mm) are suitable for connecting metal plates of medium thickness.
Large diameter rivets (such as 4mm, 4.8mm, 5mm, 6.4mm) are suitable for connecting thicker metal plates.
Second, length
The length of the rivet is usually determined according to the total thickness of the connected piece to ensure that the rivet’s mandrel end is flush with the rivet or does not sag beyond the allowable range after riveting. In general, the length of rivets is mostly between 6 mm and 35 mm. Choosing the right length can avoid the problem that the stud rod is easy to bend because the rivet pier head is too large, and it can also ensure that the pier thickness is sufficient and the nail head is complete, so as to ensure the strength and tightness of the connection.
Third, head type
The head type of the rivet is also an important aspect of its specification. Common head types include flat head, half round head, and heavy head. Different head types are suitable for different riveting occasions and surface requirements. For example, flat head rivets used in the general load of riveting occasion; The semi-round head rivet is mainly used for riveting with a large transverse load, which is the most widely used; Countersunk head rivets are mainly used for riveting occasions where the surface needs to be smooth and the load is not large.
Fourth, other specifications
In addition to diameter, length, and head type, the specification of the rivet may also include other aspects such as rod length, taper, and so on. These specifications together determine the performance and scope of application of the rivet.
Fifth, type
There are various types of rivets, and different types of rivets have different specifications and characteristics and uses. Here are some common types of rivet and its specifications and features:
Open blind rivets: the most common and most widely used rivets, stainless steel open rivets, aluminum open rivets and iron open rivets.
Closed hollow rivet: specially designed to cover the mandrel head after riveting, with waterproof, high shear, anti-vibration, anti-high pressure and other characteristics.
Double-barrel blind rivet: When riveting, the rivet core pulls the end of the rivet body into a double-barrel shape, clamping the two structural parts to be riveted, which can reduce the pressure acting on the surface of the structural parts.
Lantern type core pulling rivets: single riveted, lantern type tail deformation, strong clamping force. Waterproof lantern rivets are added with rubber washers for waterproof effect.
Drawing rivets: riveting is achieved by drawing the core to form a “mechanical lock” and a lock core structure, which has a high connection strength.
To sum up, the specifications of rivets are diverse, including diameter, length, head type, rod length, taper and type. When selecting rivets, these specifications need to be comprehensively considered according to the specific use requirements, material characteristics and actual application scenarios.
