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Yellow Zinc Plated,Longer Carbon Steel Full Thread Mushroom Head Carriage Bolt Grade 4.8 DIN603,M 6 /8
Diameter range (mm)：M5-M24，3/16-1'Length range (mm)：16-600，1''-2'
Why should hexagon bolts be prevented from loosening? It is because it can be very good, long lasting and more valuable. So, what is the anti-loosening method for the hexagonal bolt connection? One: friction anti-loosening method; two: mechanical equipment anti-loosening method; three: long-term anti-loosening method; four: riveting and punching anti-loosening method; five: structure anti-loosening method.
Anti-loose by friction
This is also a widely used anti-loosening method. This method creates a positive pressure in the middle of the thread pair that does not change with the action of external force, so as to create a sliding friction force that can inhibit the relative rotation of the thread pair. This type of positive pressure can be accomplished using radial or other two-way clamping threads. Such as the implementation of ductile sealing rings, double nuts, lock nuts and polyester insert lock nuts, etc. This kind of anti-loosening method is very convenient to dismantle the nut, but in the natural environment of severe blow, vibration and variable load, the bolt will land with preload force due to loosening at first. The blunt increase in the tightening force may cause the nut to loosen and the threaded connection to be invalid.
Mechanical equipment anti-loose
Use pins, stop washers and string galvanized steel wire rope, etc. The method of preventing loosening of mechanical equipment is more reliable, and the method of preventing loosening of mechanical equipment should be used for key connections.
long-term anti-loose
Welding, riveting, gluing, etc. Most of these methods have to break the thread standard parts during disassembly and assembly, and cannot be reused.
Riveting and anti-loosening
After tightening, it is subjected to punching, electric welding, bonding, etc., so that the thread pair loses the characteristics of the main movement and the connection becomes a difficult connection. The disadvantage of this type of method is that the bolt is only used once, and the disassembly and assembly are very difficult, and it is necessary to break the bolt and the auxiliary side is detachable.
Construction anti-loosening
The structure anti-loosening does not rely on other manpower, but only on its own structure. The structural anti-loosening method, namely the Down syndrome thread anti-loosening method, is also a progressive and effective anti-loosening method, but it is not known to most people.
