Furuno DRS6A X-Class Installation Manual page 14

1. INSTALLATION AND WIRING
6. Secure the antenna unit, using the supplied flat washers (M12, 4 pcs), spring
washers (M12, 4 pcs), and hex. nuts (M12, 8 pcs).
7. Apply silicone rubber to the flat washers, spring washers, and hex. nuts.
Detailed view
Corrosion-proof
rubber pad
Spring washer
Hex. nut
Flat washer
Spring washer
Hex. nut
Flat washer
Silicone rubber
Stud bolt