From MTA DayZ Wikipedia
The Artifact Part is a military item in MTA DayZ.
Where to find
Most loot places with Artifact Part located in Whetstone (100%).
Table with spawn chances:
|Underwater military box||3%|
|Closed military box (big)||1%|
|Military loot (very high)||1%|
|Closed military box (small)||1%|
|Search the artifact|| This item can be used by double-click (or via context menu) in Inventory.