RGP 9/16"-18 Trailer Shackle Bolt Hex Locknuts for 7K Slipper Spring & Equalizer Bolts

$20.49 USD

Shipping calculated at checkout.

Quantity

Pack of 8 Pack of 16

Product variants

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

Q1 Will this brake fit my trailer?

This brake assembly fits most standard 7,000 lb trailer axles that use 12" × 2" electric brakes with a 5-bolt mounting flange. Please verify your axle rating and brake dimensions before ordering. If you're unsure, send us your axle tag or hub information and we'll help confirm compatibility.

Q2 Does it fit Dexter or Lippert axles?

Yes. It is compatible with many standard Dexter, Lippert, Rockwell American, AL-KO, and other 7,000 lb trailer axles that use a standard 12" × 2" brake assembly. Always verify your axle specifications before purchasing.

Q3 Is this a self-adjusting brake?

Yes. This is a self-adjusting electric brake assembly, which automatically maintains proper brake shoe clearance during normal operation. This reduces maintenance and helps provide consistent braking performance.

Specifications:

Nut Type: Reversible Hex Locknut
Inside Thread Diameter: 9/16"
Thread Pitch: 18 TPI (Fine Thread, 9/16"-18)

What's Included by Kit Option:

Pack of 8:

8 x 9/16"-18 Heavy Duty Trailer Shackle Bolt Locknut

Pack of 16:

16 x 9/16"-18 Heavy Duty Trailer Shackle Bolt Locknut

(Note: Shackle bolts are sold separately).

Product Overview:

The leaf springs and equalizers on heavy-duty trailers undergo constant twisting, shifting, and severe vibration. Regular hex nuts can easily backing off, putting your axle alignment and safety at risk. This heavy-duty 9/16"-18 hex locknut is engineered with a specialized locking mechanism (either nylon insert or a flared-lip lock style) to grab onto the shackle bolt and stay tight over thousands of miles.

Made from high-tensile, heat-treated steel, this nut is highly resistant to thread stripping and rust. Perfect for maintaining or rebuilding utility trailers, flatbeds, or car haulers with 7K axle slipper suspension. Its reversible design allows you to easily start threading it onto the bolt from either side during a fast suspension swap-out.

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