# Connectors

## 53.21 - upper level internal straight bracing connector

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# Overview

See [3D overview of 53.21](https://a360.co/3I0Tipo)

## Assembled view

Assembled 53.21

## Exploded view

Exploded-view of 53.21

# Parts

See order of use for [53.21 - upper level internal straight bracing connector](https://cloud.instock.com/assets/articles/53.21/manual/)

# Assembly steps

## Prerequisites

1. fL2 or higher is installed
2. central connector is installed
3. sandwich panels are installed

Initial position state of 53.21

## Step 1

Insert 2 pcs. of [1.5 plywood washer](https://cloud.instock.com/assets/articles/1.5/) into sandwich panel holes.

## Step 2

Place 1 pcs. [99.91001 washer](https://cloud.instock.com/assets/articles/99.91001/) and fix with 3 pcs. [99.91035 screw](https://cloud.instock.com/assets/articles/99.91035/).

## Step 3

Position 2 pcs. of [10.15 floor plate with countersunk holes](https://cloud.instock.com/assets/articles/10.15/) just as depicted in the picture above.

## Step 4

Fasten floor plates with 8 pcs. of [99.73 countersunk screw](https://cloud.instock.com/assets/articles/99.73/) in designated holes for countersunk screws.

## Step 5

Position [15.40 bracing bracket](https://cloud.instock.com/assets/articles/15.40/), position 2 pcs. of [99.91001 washer](https://cloud.instock.com/assets/articles/99.91001/) onto the holes on the bracing bracket and screw in 2 pcs. of [99.29 screw](https://cloud.instock.com/assets/articles/99.29/).

## Step 6

Position [15.40 bracing bracket](https://cloud.instock.com/assets/articles/15.40/) on the bottom of the connector as depicted on the image, add 2 pcs. of [99.91001 washer](https://cloud.instock.com/assets/articles/99.91001/) onto the screws and fasten with 2 pcs. of [99.91008 hex nut](https://cloud.instock.com/assets/articles/99.91008/).