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ITEM 0.0.420.83 self-locking nut
Automotive and Rail Systems: Critical applications where vibrations and dynamic loads are intense to prevent loosening of connections.
Industrial Machinery: Providing additional security against self-loosening of nut in assembly of aggregates, compressors, and moving equipment.
Heavy Steel Constructions: Ensuring long-term safety of structures under constant stress, such as bridges, cranes, and large structural support systems.
Product is a specially cut or split ring-shaped washer used with bolts and nuts that resists rotation in one direction. Its main function is to apply pressure to surface due to washer's elastic nature when nut or bolt head is tightened, and to create a locking effect by digging into surface or nut when connection starts to loosen. These washers are one of most commonly used mechanical locking elements, minimizing risk of self-loosening due to vibration and thermal changes.
Material: Spring steel or stainless steel (A2/A4 grade).
Standard: Generally conforms to DIN 127 (Form A or B) standard.
Coating: Zinc plating (Galvanized), nickel plating, or mechanical zinc plating (to enhance corrosion resistance).
Function: Anti-loosening safety element (Against vibration).