Grade 8 Adjustable Coupler & Lunette Ring Bolt Kit – 5/8"-11 Yellow Zinc
Grade 8 Yellow Zinc Adjustable Coupler & Lunette Ring Bolt Kit 5/8"-11 Heavy-Duty Hardware Set Secure your adjustable coupler or lunette ring assembly with this premium Grade
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Grade 8 Yellow Zinc Adjustable Coupler & Lunette Ring Bolt Kit
5/8"-11 Heavy-Duty Hardware Set
Secure your adjustable coupler or lunette ring assembly with this premium Grade 8 bolt and nut kit, engineered for heavy-duty towing applications.
Designed for adjustable channel mounts and pintle hitch setups, this complete hardware set provides the strength, durability, and corrosion resistance required for demanding trailer environments.
Perfect for equipment trailers, dump trailers, and industrial hauling.
📦 What’s Included
• (2) 5/8"-11 x 4.5" Grade 8 Hex Cap Screws
• (2) 5/8"-11 Grade 8 Lock Nuts
• (4) Hardened Washers
Complete set for secure coupler installation.
📊 Specifications
| Specification | Detail |
|---|---|
| Bolt Size | 5/8"-11 |
| Bolt Length | 4.5" |
| Grade | Grade 8 |
| Finish | Yellow Zinc Plated |
| Application | Adjustable Couplers & Lunette Rings |
| Strength Rating | High-Strength Towing Hardware |
🔍 Key Features
✔ High-Strength Grade 8 Steel
Engineered for maximum durability under heavy towing loads.
✔ Yellow Zinc Corrosion Protection
Resists rust and oxidation for long-lasting outdoor performance.
✔ Complete Installation Kit
Includes bolts, lock nuts, and washers for secure mounting.
✔ Universal Channel Mount Fit
Compatible with adjustable couplers, lunette rings, and pintle hitch channel mounts.
✔ Reliable Coupling Security
Helps prevent movement, loosening, or coupling failure under load.
🚛 Ideal Applications
• Adjustable channel couplers
• Lunette ring installations
• Pintle hitch setups
• Equipment trailers
• Dump trailers
• Heavy industrial trailers
Perfect for trailer owners, fleets, contractors, and equipment operators.
What sets us apart is our dedicated team of knowledgeable professionals who are always ready to assist. Great customer service isn't just a promise—it's the foundation of our success. We invite you to visit our showroom or reach out for personalized advice. Whether you're purchasing online or stopping by, we're here to make your trailer journey seamless. Visit Us Today
- Address: 4675 East Grand River Ave, Howell, MI 48843
- Phone: (517) 225-1991 (Call or text)
- Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment
Thank you for considering AAA Trailer. We're excited to help you hit the road with confidence! If you have any questions, don't hesitate to contact us.
To deliver your favorite products, we have partnered with the UPS & FEDEX . We are ready to entrust them with your orders and are always on your side if something goes wrong.
We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement.
Grade 8 Adjustable Coupler & Lunette Ring Bolt Kit – 5/8"-11 Yellow Zinc
Sale price
$0.00
Regular price
$18.00
SAVE $-18.00
Why buy your trailer parts from AAA Trailer?
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Frequently Asked Questions
Get answers to common questions
Yes. We partner with UPS and FedEx for shipping. Delivery timelines can vary by item and destination.
Yes, delivery may be available depending on your location and the item. For the fastest confirmation (and pickup/delivery coordination), please call or text us and we’ll guide you through the options.
If you need a return or exchange, email us first so we can discuss the best solution. We’ll help confirm eligibility and provide return instructions and the correct shipping address.
Yes—AAA Trailer offers financing options for select trailer brands. Details and application links are available on the Financing page.
For most products, a license is not required. If an item does require one, it will be clearly stated on the product page.
Warranty coverage depends on the manufacturer/product and will be listed when applicable. For example, some trailer listings specify coverage such as 1-year overall + 1-year axle coverage.
Still have questions?
Our trailer experts are here to help you find the right parts
Ready to get your trailer back on the road?
Our trailer experts are here to help you find the right parts
Grade 8 Adjustable Coupler & Lunette Ring Bolt Kit – 5/8"-11 Yellow Zinc
$18.00
Fast Shipping
In stock and ships in 1-2 business days
Pickup Available
Ready for pickup at our Grand Rapids location
Expert Support
Call us if you need help with fitment or installation
Easy Returns
30-day satisfaction guarantee on all parts
Ships in 1-2 business days
Pickup available in Grand Rapids
30-day satisfaction guarantee
