Allstate Trailer Spares
Trailer U-Bolt 45mm Round Axle x 130mm — 2 Pack with Nuts
Part No: R5604 | Barcode: 9343965003220 | Series: ASTSS U-Bolts
Galvanised U-bolt kit for clamping the leaf spring assembly to a 45mm round trailer axle. 130mm length, sold as a pair with nuts included. Essential for securing the spring pack to the axle during suspension assembly or rebuild.
45mm Round Axle
130mm Length
2 Pack
Nuts Included
Suitable For
45mm Round Axles
Leaf Spring Trailers
Box Trailers
Boat Trailers
Key Features & Benefits
- Sized for 45mm round axle — U-bolt bend radius matched to wrap snugly around a 45mm diameter round trailer axle for maximum clamping contact.
- 130mm length — standard length to accommodate the spring pack, fish plate and axle pad stack-up on most Australian light to medium duty trailers.
- Nuts included — each U-bolt comes with matching nuts so you have everything needed for installation.
- Sold as a pair — two U-bolts per pack for one spring seat (you need one pack per spring).
When to Use These U-Bolts
Use R5604 when assembling or rebuilding the suspension on a trailer with a 45mm round axle. Before ordering, measure your axle cross-section — round and square axles of the same nominal size require different U-bolt shapes. Pair with R5510 axle pads and R1419A fish plates for a complete spring seat assembly.
Authorised Australian Dealer — This product is sourced directly from Allstate Tooling Solutions Australia and is backed by full Australian manufacturer warranty and local support.
Product Specifications
| Part No. | Axle Size | Shape | Length | Qty |
|---|---|---|---|---|
| R5602 | 39mm | Round | 130mm | 2 |
| R5604 ★ | 45mm | Round | 130mm | 2 |
| R5606 | 40mm | Square | 130mm | 2 |
| R5608 | 45mm | Square | 130mm | 2 |
★ You are viewing the highlighted variant. Other axle sizes and shapes are also available.




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