Light duty flat washers are made for general use. 
They are made from stell and as well being BZP plated making them very suitable for outdoor use. 
BZP (bright zinc paint) plating is a coating used to help prevent bimetallic corrosion.
Light duty flat washers are made for general use. 
They are made from stell and as well being BZP plated making them very suitable for outdoor use. 
BZP (bright zinc paint) plating is a coating used to help prevent bimetallic corrosion.
 
                                                            
                            
                                
                                    
                                        | Item No. | 
                                                    Inside Diameter (mm) | 
                                                    Outside Diameter (mm) | 
                                                    Thickness (mm) | 
                                                    Inside Diameter (inches) | 
                                                    Outside Diameter (inches) | 
                                                    Gauge No. | 
                                    
                                
                                
                                        
                                            | FW41 | 
                                                    
3                                                     | 
                                                    
7                                                     | 
                                                    
0.5                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW42 | 
                                                    
4                                                     | 
                                                    
9                                                     | 
                                                    
0.8                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW43 | 
                                                    
5                                                     | 
                                                    
10                                                     | 
                                                    
1.0                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW44 | 
                                                    
6                                                     | 
                                                    
12                                                     | 
                                                    
1.6                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW45 | 
                                                    
8                                                     | 
                                                    
17                                                     | 
                                                    
1.6                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW46 | 
                                                    
10                                                     | 
                                                    
21                                                     | 
                                                    
2.0                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW47 | 
                                                    
12                                                     | 
                                                    
24                                                     | 
                                                    
2.5                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                        
                                        
                                            | FW30 | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
3/16                                                     | 
                                                    
25/34                                                     | 
                                                    
21                                                     | 
                                        
                                        
                                            | FW31 | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
1/4                                                     | 
                                                    
9/16                                                     | 
                                                    
20                                                     | 
                                        
                                        
                                            | FW32 | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
5/16                                                     | 
                                                    
5/8                                                     | 
                                                    
19                                                     | 
                                        
                                        
                                            | FW33 | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
–                                                     | 
                                                    
3/8                                                     | 
                                                    
3/4                                                     | 
                                                    
18                                                     | 
                                        
                                
                            
                         
                        
                            
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