The .5F Series anti-vibration mount system is designed as a true marine propulsion engine mount with sufficient vertical deflection to obtain proven vibration isolation. They have controlled minimum thrust and lateral deflection under propulsion load and inertia due to sea conditions. These mounts are supplied with an adjustable nyloc nut for precision adjustment and alignment. This nyloc nut also stops migration of the adjustment under working conditions. All metal components are plated in SA5 Cobalt Zinc for maximum corrosion resistance and durability. Themoulded components are manufactured from Polénite™a special range ofengineering heat cured polymer alloys. All our components are proudly designed and manufactured by Poly Flex.