Washers

Washers are thin discs placed under fastener heads or nuts. 

 Flat Washers 

 

 Distribute load over a larger area 

 Prevent surface damage 

 

 Lock Washers 

 

 Help resist loosening from vibration 

 Less common in modern FRC than Nylock nuts 

 

 Fender Washers 

 

 Extra-large diameter 

 Used on thin materials like sheet metal or polycarbonate