Smaller-size nuts have hex flats, while larger nuts have spanner slots.
| Material | Heat Treat | Finish | DFARS | RoHS |
| Steel | - | - | Yes | Yes |

| Fits Standard-type Swing Clamps | Fits Robust-type Swing Clamps | D Diameter | E Diameter (Inch) | F (Inch) | G | T (Inch) |
| 5 Series | Robust 6 Series | 32mm | 1.319 " | 1.57 " | M28x1.5 | 0.394 " |