> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/duo-build/ftc-starter-kit-chain-drivetrain/pre-loading-brackets.md).

# Pre-Loading Brackets

## Bracket Pre-Loading Parts Required

| **PART NUMBER**                                         | **DESCRIPTION**                      | **QTY.** |
| ------------------------------------------------------- | ------------------------------------ | -------- |
| [REV-41-1317](https://www.revrobotics.com/rev-41-1317/) | 15MM BEARING PILLOW BLOCK            | 8        |
| [REV-41-1321](https://www.revrobotics.com/rev-41-1321/) | 15MM PLASTIC LAP CORNER BRACKET      | 16       |
| [REV-41-1320](https://www.revrobotics.com/rev-41-1320/) | 15MM PLASTIC INSIDE CORNER BRACKET   | 8        |
| [REV-41-1623](https://www.revrobotics.com/rev-41-1623/) | ULTRAPLANETARY BENT MOUNTING BRACKET | 2        |
| [REV-41-1624](https://www.revrobotics.com/rev-41-1624/) | ULTRAPLANETARY FLAT MOUNTING BRACKET | 2        |
| [REV-41-1359](https://www.revrobotics.com/rev-41-1359/) | M3 X 8MM HEX CAP SCREWS              | 104      |
| [REV-41-1361](https://www.revrobotics.com/rev-41-1361/) | M3 NYLOC NUTS                        | 104      |

### Pre-Loading Lap Corner Bracket Steps 

{% hint style="warning" %}
The side of the bracket with “[ribs](/duo-build/structure/brackets.md#key-terms)” must have the Hex Cap Screw head.
{% endhint %}

|                                  |                                                                                                                       |
| -------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| ![](/files/-MCNx86EB_09X1vrmkWU) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p>                               |
| ![](/files/-MCNxhkHT6UAqtnYuThm) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have twelve Pre-Loaded Brackets.</p> |

### Pre-Loading Insider Corner Bracket Steps&#x20;

{% hint style="warning" %}
The side of the bracket with “[ribs](/duo-build/structure/brackets.md#key-terms)” must have the Hex Cap Screw head.
{% endhint %}

|                                  |                                                                                                                      |
| -------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
| ![](/files/-MCNXpeKDlZTtYN5LK5J) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p>                              |
| ![](/files/-MCNv_X2QEBoRk6yEPMW) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have eight Pre-Loaded Brackets.</p> |

### Pre-Loading **Bearing Pillow Block** Steps&#x20;

{% hint style="warning" %}
The side of the bracket with “[ribs](/duo-build/structure/brackets.md#key-terms)” must have the Hex Cap Screw head.
{% endhint %}

|                                  |                                                                                                                      |
| -------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
| ![](/files/-MCNzqXarvcRwKWKsQX8) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p>                              |
| ![](/files/-MCENatOdPYdhkS1PbeR) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have eight Pre-Loaded Brackets.</p> |

### Pre-Loading UltraPlanetary Flat Mounting Bracket Steps&#x20;

|                                  |                                                                                                                    |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| ![](/files/-MCENqBkbR1mX0qFn1GW) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p>                            |
| ![](/files/-MCENsl9WR9RnYAvFgi6) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have two Pre-Loaded Brackets.</p> |

### Pre-Loading UltraPlanetary Bent Mounting Bracket Steps&#x20;

|                                  |                                                                                                                    |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| ![](/files/-MCEO2r1N7zeTI_1F6VI) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p>                            |
| ![](/files/-MCEO5TdZNg902z_x7Gz) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have two Pre-Loaded Brackets.</p> |