ARK Galvanised Trailer Axle Fish Plate 60mm Spring 50mm Wide 10mm Thick 110x100mm (SKU: FP4550G)

The ARK Galvanised Trailer Axle Fish Plate FP4550G is a heavy-duty, corrosion-resistant solution for securing 60mm wide leaf springs on trailer axles. Engineered for strength and reliability, this fish plate features a hot-dipped galvanised finish that offers superior protection against rust, making it an excellent choice for marine and coastal applications.

It accommodates U-bolts from 45mm to 50mm wide and includes precision-drilled 20mm holes spaced 45mm x 60mm apart, with an 18mm centre bore for spring bolt alignment. The overall dimensions are 110mm x 100mm, and the 10mm thick steel plate ensures long-term durability under load and vibration.

Ideal for both new trailer builds and replacements, especially in environments where corrosion is a concern, this galvanised plate helps extend the life of your suspension system while maintaining structural integrity.

Key Features:

• Made for 60mm wide leaf springs
• Fits heavy-duty U-bolts (45mm to 50mm)
• 110mm x 100mm size – compact yet sturdy
• 10mm thick galvanised steel – built to endure
• 20mm U-bolt hole diameter
• 18mm centre hole – spring alignment ready
• Hot-dip galvanised – rust and weather resistant

Perfect for coastal trailers, boat trailers, off-road rigs or anywhere long-term exposure to moisture is a factor.

Frequently Asked Questions

Evaluation & Recommendations

This version is ideal for:

• Boat trailer owners needing rust-proof hardware
• Coastal or humid-climate trailer builds
• Heavy-duty suspension systems requiring long-term durability

Installation Tips:

1. Place the fish plate securely over the axle and spring
2. Use matching galvanised U-bolts to avoid dissimilar metal corrosion
3. Ensure alignment with the centre bore and tighten bolts evenly
4. Apply anti-seize to threads to prevent future rust lock-up

For special builds or customised spring sizes, feel free to contact our support team for guidance.