| Bolt | B | Bolt installed (only hole if false) | Boolean |
| Size | S | Nominal Size in Rhino document units | Number |
| Bolt Standard | S | IfcClassification | Generic Data |
| Site or Workshop | S | Bolt installed on Site if true, workshop if false | Boolean |
| Thread in Material | T | Thread in material | Boolean |
| Cut Length | C | Cut Length | Number |
| Extra Length | E | Extra Length | Number |
| Bolt Hole Tolerance | T | Bolt Hole Tolerance | Number |
| Bolt Slot Desc | S | Bolt Slot Description ODD, EVEN, PARALLEL | Text |
| Oversize or Slot Length in X direction | X | Oversize or Slot Length in X direction | Number |
| Slot Length in Y direction | Y | Slot Length in Y direction | Number |
| Nelson Length | N | Length used only for Nelson Standard | Number |