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Clamp a Leaf-Spring Axle with Fresh High-Strength Hardware
Superlift 11794 supplies four high-strength steel square U-bolts with matching locking nuts and washers for dimension-based leaf-spring and axle work. It is a universal component, so selection depends on measured diameter, inside width, length, bend shape, and required clamping clearance rather than year-make-model fitment.
Key Features
- Four-piece square-bend U-bolt set for leaf-spring and axle mounting work
- Low-alloy high-strength steel construction
- 5/8-inch diameter with National Fine Class 2A threads
- 3-1/4-inch inside width and 14-inch overall length
- Includes aircraft-style nylon-insert locking nuts and thick heat-treated washers
- Anti-corrosion zinc or E-coat finish is used by Superlift for this product family
Fitment
No year-make-model fitment applies. Confirm every dimension, interface, clearance, load, and installation requirement shown below.
| Application Type | Requirements |
|---|---|
| Dimension Based | Universal, dimension-based application. Requires a square bend, 5/8-inch rod diameter, 3-1/4-inch inside width, and 14-inch overall length. Confirm axle tube shape and diameter, spring pack thickness, plate-hole spacing, thread engagement, surrounding clearance, and required torque before purchase. |
Specifications
| Detail | Value |
|---|---|
| Brand | Superlift |
| Manufacturer Part Number | 11794 |
| Product Type | Bolts |
| Quantity | Set of four |
| Bend Style | Square |
| Rod Diameter | 5/8 in (0.625 in; 15.875 mm) |
| Inside Width | 3-1/4 in (3.250 in) |
| Overall Length | 14 in (355.6 mm) |
| Material | Low-alloy high-strength steel |
| Thread Type | National Fine Class 2A |
| Yield Strength | 90,000-115,000 psi |
| Finish | Anti-corrosion zinc or E-coat |
| UPC | 804260018047 |
What's Included
- Four square-bend steel U-bolts
- Eight matching nylon-insert locking nuts
- Eight thick heat-treated flat washers
- Not included: Spring plates, lift blocks, leaf springs, and axle brackets
- Not included: Vehicle-specific installation instructions
About Superlift
Superlift has produced truck, Jeep, and SUV suspension components since 1975. Its universal U-bolt range provides multiple diameters, widths, lengths, and bend styles so installers can match measured axle and leaf-spring hardware instead of forcing a vehicle-specific catalog choice.
Related Parts
- Pair this hardware only with correctly sized spring plates, leaf springs, lift blocks, and axle components verified for the measured suspension assembly.
FAQ
What is the 11794?It is a universal set of four square-bend suspension U-bolts with matching locking nuts and washers, selected by physical dimensions rather than by vehicle application.
Does this kit have year-make-model fitment?No. It is dimension-based hardware and must be matched to the axle, spring pack, plate spacing, and available thread engagement.
What are the critical measurements?The rod diameter is 5/8 inch, the inside width is 3-1/4 inches, the overall length is 14 inches, and the bend is square.
How many U-bolts are included?The package contains four U-bolts plus matching nuts and washers.
Can these replace round-bend U-bolts?Not unless the suspension assembly specifically accepts the square bend and every measured dimension matches. Bend shape is a required selection criterion.
Are the U-bolts intended to be trimmed?Any excess thread and trimming method should be evaluated against Superlift's instructions and the installer’s required thread engagement. Do not alter the hardware before confirming final fit and torque.
Can used U-bolts be reinstalled instead?Suspension U-bolts are highly loaded clamping fasteners. Follow the vehicle, axle, and suspension manufacturer's service guidance regarding replacement rather than assuming used hardware is reusable.
What torque should be used?Use the current Superlift torque guide together with the axle and suspension instructions for the specific assembly. Recheck torque after the prescribed initial service interval.
Installation Instructions
- Measure the existing hardware and suspension assembly to confirm the 5/8-inch diameter, 3-1/4-inch inside width, 14-inch length, and square bend are correct.
- Support the vehicle and axle safely, unload the leaf springs as required, and replace one clamping position at a time unless the suspension instructions specify otherwise.
- Seat each U-bolt squarely around the axle or specified bracket without forcing, spreading, heating, or hammering the legs.
- Install the supplied washers and locking nuts, then tighten the nuts gradually in an alternating pattern using the current Superlift and vehicle torque guidance.
- Verify even thread engagement, plate alignment, brake-line clearance, and full suspension travel before returning the vehicle to service.
- Recheck U-bolt torque after the initial settling interval specified by the suspension manufacturer and during routine suspension inspections.
California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. See www.P65Warnings.ca.gov.
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