- Case hardened, black oxide finish
 - Commonly known as a coupling nut
 
                    Unit of Measure
                    
               
        
                                
                                                                                Product Type | 
                                                                        N/A Nuts | 
                                                                                Material | 
                                                                        N/A Steel | 
                                                                                Finish | 
                                                                        N/A Black oxide | 
                                                                                Thread (A) | 
                                                                        N/A M20x2.5 | 
                                                                                B | 
                                                                        N/A 32 mm | 
                                                                                C | 
                                                                        N/A 51.0 mm | 
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