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B&Q£10.26Visit shop B&Q - 1 Twin Parabolic Leaf Spring High Tensile U Bolt Nuts For Ifor Williams Trailers
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The AB Tools BS150 High Tensile U Bolt is an essential component designed for owners and technicians working on Ifor Williams trailers featuring twin or double parabolic leaf springs. Engineered for high-load, professional-grade applications, this U bolt provides critical structural integrity and secure mounting for trailer suspension systems; however, users must verify their specific trailer dimensions before purchase to ensure the 53mm internal width and 115mm internal height specifications are compatible with their existing axle and spring configurations.
| Model Part Number | BS150 |
|---|---|
| Brand | AB Tools |
This model is specifically designed for twin or double parabolic leaf spring setups found on Ifor Williams trailers.
The total overall height is 140mm, with an internal height of 115mm.
No. Always use the included nyloc nuts to ensure proper locking and safety during trailer operation.
This product listing includes one U bolt and two M12 nuts.
You will need a socket set or spanner suitable for M12 nuts and a torque wrench to ensure proper fastening.
Ensure threads are clean and free of rust; the nylon insert creates significant resistance by design to prevent loosening.
Verify your trailer's axle model; this part is specific to standard Ifor Williams twin/double parabolic setups and may not fit larger or smaller aftermarket axles.
If there is excess thread, you can trim the bolt slightly, but ensure you do not damage the structural integrity of the thread used for the nut engagement.
Before installation, ensure the vehicle is safely supported on jack stands and that the weight is relieved from the axle. Remove existing rusted or damaged U bolts and clean the axle housing surface to ensure a flush fit. Slide the new U bolt over the leaf spring and through the axle plate, tightening the M12 nyloc nuts in a cross-pattern to prevent binding. To maintain the life of the bolt, keep the threads clear of road debris and periodically inspect for any signs of surface rust. Do not reuse old nuts; always use the provided nyloc hardware to ensure the locking mechanism remains effective.
