M12 x 1.75p Metric Coarse Zinc Class 8 Hex Nyloc Nuts High Tensile DIN 985

Description

Product Introduction
This M12 x 1.75p 8-grade DIN985 galvanized hexagonal nylon anti loosening nut produced by VANGUARD INDUSTRIAL is a high-strength self-locking fastener that complies with the German DIN985 standard
Core parameters: Adopting the metric coarse thread system, with a nominal diameter of M12 and a pitch of 1.75mm, it belongs to the 8th grade high-strength specification. The overall structure has been galvanized and passivated, with excellent anti rust and anti-corrosion performance.
Structural characteristics: A blue nylon locking ring is embedded at the end of the nut, and the inner diameter of the nylon ring is slightly smaller than the diameter of the nut thread. When the bolt is screwed in, the nylon ring is compressed and deformed, generating a rebound force to laterally clamp the bolt thread, greatly increasing the friction force at the thread engagement, and avoiding the problem of relative rotation and loosening of the thread pair under impact and vibration conditions from the root. Compared with ordinary hex nuts, its anti vibration and anti loosening performance is several times higher, and it can work stably in an environment of -50 ℃~100 ℃.
It is widely used in the automotive industry, mining machinery, transportation equipment, electromechanical equipment and other scenarios that require high connection reliability, and can effectively reduce the risk of equipment failure caused by loose fasteners.
🛠️ Usage
Preparation in advance
Confirm that the bolts used for matching are metric coarse thread bolts with M12 specifications and a pitch of 1.75mm. Clean the dust and oil stains on the bolt threads in advance to ensure that the threads are clean and free of debris. Check that the nylon ring of the nut is not damaged or detached, and that the threads are free of burrs and deformations.
Installation operation
Align the nut with the bolt thread, manually pre tighten it to the nylon ring position, and use a socket or wrench of the corresponding specification to evenly apply force and lock it, keeping the direction of force aligned with the screw axis until the nut is completely in contact with the workpiece contact surface. There is no need to overtighten to avoid excessive compression and deformation of the nylon ring, which may affect the long-term anti loosening effect.
Precautions
The nylon locking structure of this nut supports multiple disassembly and assembly, and can maintain reliable anti loosening performance even after 5-10 repeated uses under normal working conditions. However, if obvious wear or cracking of the nylon ring is found, it needs to be replaced in a timely manner to avoid the failure of anti loosening performance; Do not mix with M12 fine thread bolts, otherwise there may be problems such as thread misalignment, slipping, and even connection failure.