Thread Size
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .250-20 (1/4-20) 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Type
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Self-Locking HNL 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Thread Code
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          0420 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                A (Shank) Max.
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .058 in
                                                                                    
                                                                                                                                                      | 
                                                    
                                                    
                                                                        
                                                                                Min. Sheet Thickness
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .058 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Hole Size in Sheet + 0.005  - 0.000
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .344 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                C Max.
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .343 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                E ± .010
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .500 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                T2 ± .010
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .189 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        | 
                                                                                Min. Dist. Hole C/L to Edge1
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          .38 in
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Thread Specification
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          IFI 100/107 Grade B 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Fastener Material
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Carbon Steel 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Material Finish
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless plus sealant/lubricant 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                For Use in Sheet Hardness
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          HRB 60 / HB 107 or Less 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                CAD Supplier
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          PennEngineering® (PEM®) 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Inventory
                                                                                                                                                                                                                                 | 
                                                                        
                                                                                    
                                                                                        N/A
                                                                                          {0} 
                                                                                    
                                                                                                                                                     |