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China Suppliers Factory DIN 980 Refined Hexagonal Locking Nut - Anti-Loosening Design with High-Quality Materials
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China Suppliers Factory DIN 980 Refined Hexagonal Locking Nut - Anti-Loosening Design with High-Quality Materials

Introducing our high-quality nuts designed for secure bolt connections, available in various grades including 4.8, 8.8, 10.9, and 12.9. Made from superior materials such as Q235, 35K, 45K, 40Cr, 35Crmo, and 42Crmo, these nuts are perfect for a range of applications. Our surface treatments, including Blackened, Electrogalvanized, Dacromet, Hot-dip Galvanized, and Galvanized, ensure enhanced durability and corrosion resistance, These nuts are engineered to fasten two identical nuts onto a single bolt, applying a tightening torque between them to create a reliable connection. The design comprises two parts with staggered cams, featuring an internal wedge mechanism where the slope angle surpasses the nut angle on the bolt. This innovative design allows a robust grip, preventing loosening even under vibration. When vibrations occur, the protruding sections of the anti-loosening nut engage against each other, generating lifting tension for an exceptional anti-loosening effect, As a trusted factory and supplier based in China, we guarantee high-quality products that meet your needs for reliability and strength. Explore our extensive range of nuts today and experience the assurance of secure fastening solutions!
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    Product Detail

    Product introduction introduction

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    There are threaded holes drilled through the outer surface of the nut to the inner threaded surface (usually 2, distributed 90 degrees on the outer surface), which are used to screw in small diameter countersunk screws. The purpose is to apply a centripetal force to the thread to prevent the locking nut from loosening. The high-quality locking nut sold in the market is embedded with a copper small piece on the inner circular surface of the nut that matches the thread of the locking nut, to avoid direct contact between the radial locking screw and the locked thread and damage to the latter. This type of locking nut is gradually being applied in shaft end locking situations of rotating motion parts, such as anti loosening of ball screw mounting end bearings.

    A specialized locking nut needs to be used together with a locking gasket. The dedicated anti loosening nut is not a hexagonal nut, but a medium round nut with 3, 4, 6, or 8 notches on the circumference of the nut (depending on the size of the nut and the manufacturer's product series). These notches are not only the focus of tightening tools, but also the entry point of the anti loosening pad clamp.

    Usage products

    Lock nuts made of different metals can be applied to different temperature conditions; However, due to the deformation resistance of the metal material itself, the deformation of the all-metal nut is not easy to control, which will lead to a relatively large dispersion of the anti-loosening torque, which is easy to cause the assembly to be cized; In addition, after the assembly of this kind of lock nut, due to the effect of friction, it is easy to cause damage to the coating on the thread surface, which affects the anti-corrosion performance.

    Precautions: When assembling the all-metal lock nut, the speed of the assembled tool should not be too high; If it is a lock nut with galvanized, Dacromet and other surface treatments, it should be lubricated first when used; The all-metal lock nut can be reused, but should not be installed more than 5 times.
    Thread size M3 M4 M5 M6 M7 M8 M10 M12 M14 M16
    Pitch 0.5 0.7 0.8 1 1 1.25 1.5 1.75 2 2
    Fine teeth - - - - - 1 1 1.5 1.5 1.5
    Fine teeth - - - - - - 1.25 1.25 - -
    minimum 6.01 7.66 8.79 11.05 12.12 14.38 18.9 21.1 24.49 26.75
    Maximum = Nominal value 3.7 4.2 5.1 6 7 8 10 12 14 16
    minimum 3.4 3.9 4.8 5.7 6.5 7.5 9 11 12 14
    Maximum = Nominal value 5.5 7 8 10 11 13 17 19 22 24
    minimum 5.32 6.78 7.78 9.78 10.73 12.73 16.73 18.67 21.67 23.67
    Thread size M18 M20 M22 M24 M27 M30 M33 M36 M39
    Pitch 2.5 2.5 2.5 3 3 3.5 3.5 4 4
    Fine teeth 2 2 2 2 2 2 2 3 3
    Fine teeth 1.5 1.5 1.5 - - - - - -
    minimum 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44
    Maximum = Nominal value 18 20 22 24 27 30 33 36 39
    minimum 16 18 20 22 25 28 31 34 37
    Maximum = Nominal value 27 30 32 36 41 46 50 55 60
    minimum 26.16 29.16 31 35 40 45 49 53.8 58.8
    Frequently Asked Questions (FAQ)
    What is the purpose of the outer threaded holes in these locking nuts?
    The threaded holes are used to screw in small diameter countersunk screws. This applies a centripetal force to the thread to prevent the locking nut from loosening.
    Why is a small copper piece embedded on the inner surface of high-quality locking nuts?
    The copper piece matches the thread of the locking nut to avoid direct contact between the radial locking screw and the locked thread, protecting the locked thread from damage.
    Where are these types of locking nuts typically applied?
    They are commonly applied in shaft end locking situations of rotating motion parts, such as anti-loosening setups for ball screw mounting end bearings.
    What characterizes a specialized locking nut and gasket system?
    Dedicated anti-loosening nuts are medium round nuts (not hexagonal) featuring 3, 4, 6, or 8 notches on the circumference. These notches act as both tightening tool contact points and entry points for the anti-loosening pad clamp.
    What precautions should be taken when assembling all-metal lock nuts?
    Avoid high speeds on the assembly tool during installation. If the nut has surface treatments like galvanized or Dacromet, it must be lubricated before use.
    Can all-metal lock nuts be reused?
    Yes, all-metal lock nuts can be reused, but they should not be installed more than 5 times to ensure reliable performance.