
                                                                                Product | 
                                                                        N/A Tapping Screws | 
                                                                                Unit of Measure | 
                                                                        N/A English | 
                                                                                Type | 
                                                                        N/A Type I | 
                                                                                Nominal Size or Basic Screw Dia. | 
                                                                        N/A 1/2 in | 
                                                                                Nominal Size or Basic Screw Dia. (Decimal) | 
                                                                        N/A 0.5000 in | 
| Applicable to Screw Types1 | 
                                                                                    
                                                                                        N/A
                                                                                          2  | 
                                                    
                                                                                Ref. Recess Dia. (M) | 
                                                                        N/A 0.430 in | 
                                                                                Ref. Recess Depth (T) | 
                                                                        N/A 0.271 in | 
                                                                                Ref. Recess Width (N) | 
                                                                        N/A 0.071 in | 
                                                                                Driver Size | 
                                                                        N/A 4 | 
                                                                                Max. Recess Penetration Gaging Depth | 
                                                                        N/A 0.263 in | 
                                                                                Min. Recess Penetration Gaging Depth | 
                                                                        N/A 0.239 in |