Union Butterfield® Forming Tap, Series: 1580, Measurement System: Imperial, #4-48 Thread, UNF Thread Standard, Bottoming Chamfer, 9/16 in Thread Length, 1-7/8 in Overall Length, Right Hand Cutting Direction, Class of Fit: 2B/3B, 0.141 in Shank Diameter, 0.11 in Square, HSS, Bright, H3 Thread Limit
| Chamfer Type | : | Bottoming |
| Class of Fit | : | 2B/3B |
| Cutting Direction | : | Right Hand |
| Finish/Coating | : | Bright |
| Material | : | HSS |
| Measurement System | : | Imperial |
| Overall Length | : | 1-7/8 in |
| Series | : | 1580 |
| Shank Diameter | : | 0.141 in |
| Square Size | : | 0.11 in |
| Thread Length | : | 9/16 in |
| Thread Standard | : | UNF |
| Thread Size | : | #4-48 |
| Thread Limit | : | H3 |