| Connection | Length C (mm) | Length Shoulder J (mm) | Width Spanner flats E (mm) | Std bore d (mm) | Outside diameter | Across Flat F (mm) | ||
| Box up A | Box down B | Top Di (mm) | Bottom D2 (mm) | |||||
| API2 3/8*REG | API2 3/8*REG | 140 | 50.8 | 65 | 24 | 88.9 | 88.9 | 69.85 |
| API2 3/8*REG | API2 7/8*REG | 134.9 | 69.85 | 50.8 | 31.75 | 88.9 | 88.9 | 69.85 |
| API2 3/8*REG | API3 1/2*REG | 146 | 39.7 | 50.8 | 25.4 | 114.3 | 88.9 | 98.4 |
| API3 1/2*REG | API3 1/2*REG | 101.6 | 39.7 | 50.8 | 44.45 | 127 | 127 | 98.4 |
| API31/2*REG | API4 1/2*REG | 134.9 | 39.7 | 50.8 | 52.4 | 114.3 | 146 | 98.4 |
| API2 7/8*REG | API2 3/8*REG | 134.9 | 39.7 | 50.8 | 31.75 | 88.9 | 88.9 | 69.85 |
| API2 7/8*REG | API3 1/2*REG | 134.9 | 39.7 | 50.8 | 44.45 | 114.3 | 114.3 | 98.4 |
| API2 7/8*REG | API4 1/2*REG | 174.6 | 100 | 50.8 | 44.45 | 114.3 | 146 | 98.4 |
EN
