| 0x10 | BonesToPin | TArray<FPinBoneData> | 2 flags | [] |
| 0x01 | PinTo | ERetargetSourceOrTarget | 5 flags | Target |
| 0x01 | bCopyTranslation | bool | 5 flags | true |
| 0x01 | bCopyRotation | bool | 5 flags | true |
| 0x01 | bCopyScale | bool | 5 flags | true |
| 0x01 | TranslationMode | EPinBoneTranslationMode | 5 flags | CopyGlobalPosition |
| 0x01 | RotationMode | EPinBoneRotationMode | 5 flags | CopyGlobalRotation |
| 0x0046 | 0x0A | padding / unreflected |
| 0x60 | GlobalOffset | FTransform | 4 flags | {Rotation={X=0, Y=0, Z=0, W=1}, Translation={X=0, Y=0, Z=0}… |
| 0x60 | LocalOffset | FTransform | 4 flags | {Rotation={X=0, Y=0, Z=0, W=1}, Translation={X=0, Y=0, Z=0}… |
| 0x01 | bMaintainOffset | bool | Deprecated+5 flags | true |
| 0x01 | PinType | EPinBoneType | Deprecated+5 flags | FullTransform |
| 0x0112 | 0x0E | unreflected bytes to end of UPinBoneOp |