# contactHitEventThreshold

> The contact hit event threshold controls the collision speed needed to generate a contact hit event, usually in meters per second. See PhysicsEvents.ContactHitEvent. See _contactHitEventThreshold.

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public float contactHitEventThreshold { readonly get; set; }
```