Thread Size
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          1/4-20 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Grip Code
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          260 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Grip Range
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .165 - .260 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                B ± .015
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .500 in
                                                                                    
                                                                                                                                                      | 
                                                    
                                                    
                                                                        
                                                                                C Nom.
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .030 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                øD Max.
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .390 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        | 
                                                                                Stud Length L Nom. (at Max. Grip)1
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .905 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                M Ref.
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .470 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Hole Size in Sheet + .006 - .000
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .391 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Fastening
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Installed 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Thread Specification
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          2A per ASME B1.1 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Standard Material
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Insert - Low Carbon Steel, Stud - Heat-treated carbon steel 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Standard Finish
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          RoHS Compliant Zinc Yellow 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                CAD Supplier
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          PennEngineering® (Atlas®) 
                                                                                    
                                                                                                                                                     |