> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/examples/steel-bridge-examples/example-steel-i-girder-bridge-ex1-sig/properties-ex1-sig/bolt-property-ex1-sig.md).
# Bolt Property
This section defines bolt specifications for field splice and gusset plate connections.
{% hint style="info" %}
**Navigation:** Properties > Bolt Property
For detailed parameter explanations, see the [Bolt Property Reference](https://docs.openbrim.org/templates/steel-i-girder-bridge-workflow/properties-sig/bolt-property-sig).
{% endhint %}
## Steps
### Step 1: Navigate to Bolt Property
Navigate to **Properties > Bolt Property** in the tree view.
### Step 2: Create Flange Bolt Property
Click the first cell under **Name** and enter **BoltFla**.
### Step 3: Set Bolt Diameter
Click the **three-dots icon** on the **Bolt Diameter** cell and set the diameter to **0.875 in**.
### Step 4: Set Nut Diameter
Enter the **Diameter of the Nut** as **1 in**.
### Step 5: Configure Mechanical Properties
Keep the **Mechanical Properties** as default (A325 bolts).
### Step 6: Configure Visual Settings
Keep the **Visual Settings** as default.
### Step 7: Create Additional Bolt Properties
Create two additional bolt properties:
| Name | Bolt Diameter | Nut Diameter | Usage |
| ---------- | ------------- | ------------ | ------------------ |
| BoltWeb | 0.875 in | 1.4375 in | Web splice bolts |
| BoltGusset | 1.0 in | 1.4375 in | Gusset plate bolts |
Quick Tip: Bolt Standards
* **A325** bolts are high-strength structural bolts commonly used for slip-critical connections
* The **Slip Coefficient** (Class B) assumes clean mill scale surfaces
* **Faying Surface Condition** affects the slip resistance of the connection
## Verification
{% hint style="success" %}
After completing these steps, the bolt properties should match the views shown below.
{% endhint %}
{% hint style="success" %}
To view the entire procedure explained on this page, please watch the recorded video below.
{% endhint %}
{% embed url="" %}
Bolt Properties
{% endembed %}
---
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