Applicable to screw types as indicated by code symbols.
- Type AB thread forming.
 - Type A thread forming, except for short lengths.
 - Types B and BP thread forming and Types BF and BT thread cutting.
 
                    Unit of Measure
                    
               
        
            Specifications
                                                                                Product | 
                                                                        N/A Tapping Screws | 
                                                                                Unit of Measure | 
                                                                        N/A English | 
                                                                                Nominal Size or Basic Screw Dia. | 
                                                                        N/A No. 0 | 
                                                                                Nominal Size or Basic Screw Dia. (Decimal) | 
                                                                        N/A 0.0600 in | 
| Applicable to Screw Types1 | 
                                                                                    
                                                                                        N/A
                                                                                          1  2 3  | 
                                                    
                                                                                Max. Head Dia. (A) | 
                                                                        N/A 0.116 in | 
                                                                                Min. Head Dia. (A) | 
                                                                        N/A 0.104 in | 
                                                                                Max. Head Height (H) | 
                                                                        N/A 0.039 in | 
                                                                                Min. Head Height (H) | 
                                                                        N/A 0.031 in | 
                                                                                Max. Head Radius (R) | 
                                                                        N/A 0.020 in | 
                                                                                Max. Slot Width (J) | 
                                                                        N/A 0.023 in | 
                                                                                Min. Slot Width (J) | 
                                                                        N/A 0.016 in | 
                                                                                Max. Slot Depth (T) | 
                                                                        N/A 0.022 in | 
                                                                                Min. Slot Depth (T) | 
                                                                        N/A 0.014 in | 
- 1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square
 
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