Ubiquiti RocketDish LW RD-5G30-LW Quick Start Manual page 9

7. Attach two Hex Head Bolts, two Lock Washers, and two Flat
Washers to the bottom of the Mounting Bracket. Ensure that
there is a gap of 8 mm between each Flat Washer and the
Mounting Bracket.
Note:
installed between the Hex Head Bolt and Flat Washer.
Ensure that each Lock Washer is always
Hex Head Bolt
Lock Washer
Flat Washer
8 mm