Trailer Hitch A Frame Coupler
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Trailer Hitch A Frame Coupler - Heavy-Duty Towing Solution
Qingdao RuiRui's Trailer Hitch A Frame Coupler delivers enterprise-grade performance with customizable weight ratings from 5,000 to 15,000 lbs capacity. Our precision-manufactured couplers highlight SAE J684 compliant development, ±0.005mm machining resistances, and coordinate 2.25-inch jack mounting gaps. Built from ASTM A27 cast steel with zinc plating advertising 500+ hour salt shower security, each unit experiences 300,000+ cycle weariness testing. With MOQ adaptability beginning at 1,000 pieces and 20-45 day conveyance, we've served worldwide clients for 17+ years through our ISO 9001:2015 certified facility.
Product Specifications
|
Parameter |
Specification |
|
Weight Capacity |
5,000 - 15,000 lbs (Class III-IV) |
|
Ball Sizes |
2" and 2-5/16" options |
|
Material |
ASTM A27 cast steel / HSLA stamped steel |
|
Surface Treatment |
Electrogalvanizing, powder coating, primer |
|
Jack Hole Diameter |
2.25" with UNC 3/8-16 threading |
|
Manufacturing Tolerance |
±0.005mm precision machining |
|
Origin |
Qingdao, China |
|
MOQ |
1,000 pieces (negotiable) |
|
Delivery Time |
20-45 days |
|
Certifications |
SAE J684, ISO 9001:2015 |

Why Choose Our A Frame Coupler Solution?
Advanced Manufacturing Capabilities
Our state-of-the-art office houses 20+ CNC machines counting multi-axis centers competent of taking care of complex geometries. Each coupler experiences accuracy machining with tolerances as tight as ±0.005mm, guaranteeing culminate ball stash fit and dispensing with perilous "wrong hooking" scenarios.
Superior Material Engineering
We utilize high-strength low-alloy steel (HSLA) for standard applications, and ASTM A27 cast steel for heavy-duty variations. This fabric choice gives uncommon affect resistance and avoids stretch breaks amid high-load towing operations.
Comprehensive Quality Control
Each batch undergoes rigorous testing protocols including:
· Static tensile testing at 1.5x to 3x rated capacity
· Dynamic fatigue cycling (300,000+ cycles)
· Latch functionality verification with Go/No-Go gauges
· Salt spray corrosion testing (ASTM B117)
Key Applications & Industries
Heavy-Duty Construction & Utility
Perfect for pulling slide steers, excavators, and development gear. Our cast head plan withstands tall vertical tongue loads and consistent vibration without deformation.
Recreational Vehicle Market
Travel trailer and caravan applications benefit from our ergonomic locking frameworks. The quick-sleeve component guarantees simple visual affirmation of appropriate ball engagement for non-professional drivers.
Agricultural & Livestock Transportation
Operating in cruel situations with mud, tidy, and destructive materials requires specialized assurance. Our hot-dip galvanization prepare conveys expanded benefit life indeed beneath extraordinary conditions.

Technical Features & Benefits
Integrated Jack Mounting
The standard 2.25-inch breadth jack gap with UNC 3/8-16 threading permits consistent establishment of A-frame jacks, disposing of the require for partitioned mounting brackets.
Multiple Latch Options
Choose from yoke-style thumb hooks, sleeve-lock collars, or posi-lock trigger instruments based on your particular application necessities and client preferences.
Custom Surface Treatments
Select from gray groundwork for weld-on applications, zinc plating for erosion resistance, or dark powder coating with 500+ hour salt shower rating for most extreme durability.
Manufacturing Process Excellence
One-Stop Production Capability
From crude fabric acquisition through the last assessment, we control each angle of generation. Our coordinates approach disposes of brokers, diminishing costs by 20-30% compared to exchanging companies.
Advanced CNC Machining
Our Swiss-type machines handle accurate turning operations whereas live tooling capabilities empower combined processing and turning in single setups, guaranteeing dimensional precision and surface wrap up quality.
Quality Documentation
Every shipment incorporates total fabric certifications, dimensional reports, and compliance documentation to meet OEM prerequisites for traceability and quality assurance.

Customization Options
Weight Rating Flexibility
Whether you need Class III (5,000 lbs) for lighter trailers or Class IV heavy-duty (15,000 lbs) for commercial applications, we customize each Trailer Hitch A Frame Coupler to your exact specifications.
Dimensional Modifications
Our designing group gives design-for-manufacturability (DFM) examination, optimizing your coupler plan for generation proficiency whereas keeping up auxiliary integrity.
Surface Finish Selection
Choose from electrogalvanizing, powder coating, or specialized treatments based on your environmental conditions and aesthetic requirements.
Global Supply Chain Advantages
Strategic Location Benefits
Located in Qingdao near major shipping ports, we offer flexible shipping terms including EXW, FOB, and DDP arrangements for worldwide delivery.
Scalable Production
With 24/7 production capacity across three shifts, we handle everything from prototype development (zero MOQ) to high-volume manufacturing with consistent quality standards.
Engineering Support
Our dedicated R&D team assists with design optimization, material selection, and testing protocols to ensure your Trailer Hitch A Frame Coupler meets all performance requirements.

Quality Assurance & Compliance
International Standards
All products comply with SAE J684 regulations and undergo VESC V-5 testing protocols, ensuring safety and reliability in demanding towing applications.
Continuous Improvement
Our ISO 9001:2015 certified quality management system drives continuous improvement in processes, materials, and customer satisfaction.
Inspection Equipment
Professional testing equipment including CMM machines, optical comparators, and roughness testers verify dimensional accuracy and surface quality on every batch.
Contact Us
Ready to enhance your trailer manufacturing with premium Trailer Hitch A Frame Coupler solutions? Contact our engineering team at kshdhardware@qdkshd.com for custom quotes and technical support.
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