U-bolts

U-bolts 

Suspension U-bolts 
Suspension U-bolts are essential components in a vehicle's suspension system, serving the critical function of securing leaf springs. These specialized fasteners are engineered to provide both stability and support by firmly attaching the leaf springs to the vehicle's axle. The distinctive u-shape of these bolts allows them to encircle the leaf spring assembly or the axle itself, creating a secure connection that is vital for maintaining proper alignment.
This alignment is crucial for the optimal performance of the suspension system, which directly impacts the vehicle's safety and handling characteristics.  U-bolts are typically constructed from high-strength materials, ensuring they can withstand the significant stresses encountered during driving.

It is important to note that U-bolts should never be reused, as the threads can stretch, preventing them from being properly retightened and potentially compromising the integrity of the suspension system.


We manufacture a wide range of U-bolts.

• Round Top U-bolts
• Square Top U-bolts
• Semi-round Top U-bolts
• Forged-Top (flat) U-bolts
• 3/8" (.375) up to 2" (2.00) bar size grade 5 and Grade 8
• Deck Box Hold Down U-bolts with Tie Plates

Grade 2 U-bolts 1045 Steel 36,000 PSI Yield
Grade 5 U-bolts 1045 Steel Quenched and Tempered 92,000 PSI Yield 120,000 Tensile
Grade 7 U-bolts 1541 Cold Drawn 115,000 PIS Yield
Grade 8 U-bolts 4140 Quenched and Tempered 130,000 PSI Yield  150,000 Tensile

Deep Nuts (Tall Nuts) and Flat washers
3/8" .375" Nuts and Washers  
7/16" .437" Nuts and Washers
1/2" .500"  Nuts and Washers
9/16" .562" Nuts and Washers
5/8" .625" Nuts and  Washers
3/4" .750"  Nuts and Washers
7/8" .875" Nuts and Washers
1" 1.00 Nuts and Washers
1-1/8" 1.125" Nuts and Washers
1-1/4" 1.250" Nuts and Washers
1-1/2" 1.5" Nuts and Washers
1-1/2" 1.5" Nylock Deep Nuts


Please Call or Email us for assistance.

Dendoff Springs Ltd
12045 Old Yale Road
Surrey, British Columbia,
Canada V3V 3X4
604-580-3400
800-661-4205
Sales@Dendoff.com