Contact lock washer    NF E25-511

Material : spring steel

Finishing : Galvanized Cr3

 

 





Size


D1


D2


H


s




M3


3.1


8


1


0.6




M4


4.1


10


1.4


0.9




M5


5.1


12


1.8


1.1




M6


6.1


14


2.1


1.3




 


 


 


 


 




M8


8.2


18


2.35


1.4




M10


10.2


22


2.75


1.6




M12


12.4


27


3.1


1.8




M16


16.4


32


4.1


2.8




M20


20.5


40


4.9


3.2





 

 

Special features contact-lock washers type medium:


suitable for use simultaneously as lock washer and plain washer with oversize or elongated holes
no damage to surface, exceptional locking action and high elasticity to compensate play or setting
excellent contact in electrical appliances avoiding overheating
applicable for bolts with a property class ≤ 10.9


 

 

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