Specifies requirements for lifting hooks as shown in the figure, in a range of sizes having performance compatibility with the corresponding nominal sizes of grade M(4) chain. Performance compatibility encompasses component strength and the necessary physical dimensions.                          
                          
                          
                            
                                
                                    
                                        Document identifier
                                        ISO 4779:1986
                                     
                                    
                                        Title
                                        Forged steel lifting hooks with point and eye for use with steel chains of grade M(4)
                                     
                                                                        
                                        ISO Category
                                        TC 111/SC 3: Components and accessories
                                     
                                    
                                    
                                        Publication date
                                        1986-12-01
                                     
                                                                        
                                    
                                        International Relationship
                                        
                                                                                    
                                     
                                    
                                    
                                    
                                    
                                    
                                    
                                    
                                    
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