Ubiquiti Networks PowerBridgM10 - Manual (Page 5)

3. Connect the Elevation Rod to the back of the Dish using a
M10x25 Bolt, a M10 Washer, a M10 Spring Lock Washer, and
a M10 Hex Nut. Install a M16 Hex Nut about halfway down
on the Elevation Rod and then install a M16 Washer on the
Elevation Rod.
4. Insert the four M10x150 Carriage Bolts into the Mounting
Bracket.