Towing and Recovery Chains
Grade 43 Trailer Safety Chain with Clevis Slip Hook
A Grade 43 high-test carbon steel trailer safety chain with a clevis slip hook and latch, designed as a secondary restraint to prevent trailer separation in case of coupler failure. The chain is zinc plated for corrosion resistance and available in multiple diameters and lengths to suit various towing applications. It connects directly to trailer hitch points and vehicle attachment points for reliable, repeatable performance.
- Grade
- Grade 43 / High Test Chain
- Material
- Carbon Steel Hook
- Finish
- Zinc Plated / Custom Finish Chain
- Type
- Clevis Slip Hook
- Catalogue Family
- Towing and Recovery Chains
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Grade 43 Trailer Safety Chain Gives You
- Grade 43 carbon steel chain provides high tensile strength and wear resistance for heavy-duty towing
- Clevis slip hook with latch allows quick, secure attachment and detachment without tools
- Zinc plated finish resists rust and corrosion in outdoor and wet environments
- Secondary safety connection reduces risk of trailer detachment during transport
- Available in multiple chain diameters and custom lengths to match specific vehicle and trailer configurations
- Heat-treated carbon steel construction improves mechanical performance under dynamic loads
- Standard 4:1 design factor ensures safe working load is well below breaking strength
Application Scenarios
Where Grade 43 Trailer Safety Chain Is Used
- Utility trailer towing on public roads where coupler failure could lead to loss of trailer control
- Cargo trailer transport over rough terrain with frequent stops and starts that stress the hitch connection
- Boat trailer hauling where exposure to saltwater increases corrosion risk
- Agricultural trailer use in muddy or wet field conditions requiring durable, low-maintenance hardware
- Flatbed trailer transport of heavy equipment where a secondary connection prevents sudden separation
- Commercial fleet operations requiring consistent, reliable safety chains across multiple vehicles
Who It Is For
Buyers This Product Is Built For
- Trailer manufacturers integrating safety chains into new trailer builds
- Towing equipment suppliers stocking safety chains for retail or fleet use
- Fleet operators specifying safety chains for commercial transport vehicles
- Equipment rental companies needing durable, repeatable safety hardware
- Individual trailer owners seeking reliable, code-compliant safety connections
Problems It Solves
Problems This Product Removes
- Risk of trailer detachment due to coupler failure during towing or sudden braking
- Inadequate secondary restraint on trailers that rely only on the primary coupler
- Corrosion damage to safety chains in wet or salt-exposed environments
- Difficulty in quickly connecting and disconnecting safety chains during frequent loading/unloading
- Lack of standardization in chain size and strength across different trailer models
- Buying chain and hook from separate suppliers, increasing procurement complexity
Technical Features
Technical Features
- Chain material: Grade 43 high-test carbon steel, heat treated for improved mechanical properties
- Clevis slip hook with latch for secure, tool-free connection and disconnection
- Zinc plated finish for corrosion resistance in outdoor and wet service
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Working load limit based on chain diameter and standard G43 specifications
- Marking: G43 stamped on the chain for traceability and compliance
- Available in 1/4”, 5/16”, 3/8” chain diameters and customizable lengths
Specifications
Grade 43 Trailer Safety Chain Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Chain Grade | Grade 43 (G43) high-test carbon steel |
|---|---|
| Material | Heat-treated carbon steel |
| Hook Type | Clevis slip hook with latch |
| Surface Finish | Zinc plated (white/blue), custom finishes available |
| Chain Diameter Options | 1/4", 5/16", 3/8", or customized |
| Working Load Limit | Based on chain size (standard G43) |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Marking | G43 stamped on chain for traceability |
| Length | Customized according to requirements |
Materials
Materials And Finishes
- Grade 43 high-test carbon steel for chain body with heat treatment to enhance strength and durability
- Clevis slip hook made from high-strength carbon steel, heat treated for impact resistance
- Zinc plated coating over the chain and hook to resist rust and corrosion
- Custom finishes available upon request, including powder coating or electrophoretic black
Manufacturing Process
How This Product Is Made
1Raw material procurement of Grade 43 carbon steel bars
2Chain link forging and heat treatment to achieve required mechanical properties
3Clevis slip hook blanking and machining
4Assembly of clevis slip hook with latch onto chain end
5Zinc plating or custom surface finishing process
6Stamping of G43 marking and working load limit on chain
7Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches to verify load capacity
- Dimensional tolerance check against published chain size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection of chain links and hook for defects or misalignment
- Surface finish thickness and adhesion test for zinc plating
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at warehouse before shipment
Customisation
Customisation Options
- Custom chain lengths built to a drawing or specification
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Private label and OEM marking available on chain or packaging
- Chain diameter options beyond standard 1/4", 5/16", 3/8" upon request
- Packing configuration tailored to customer warehouse or retail requirements
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Standard Grade 30 chain | Grade 43 offers higher tensile strength and better wear resistance, suitable for heavier loads and repeated use |
| Screw pin hook | Clevis slip hook allows faster connection and disconnection, but screw pin hooks may offer more secure locking under extreme vibration |
| Wire rope safety chain | Steel chain provides better abrasion resistance and durability in rugged environments, but wire rope is lighter and more flexible |
| Rigid safety chain with fixed hook | Clevis slip hook allows easier attachment and removal, but fixed hooks may be more resistant to accidental disengagement |
Use Guide
How To Use And Inspect Grade 43 Trailer Safety Chain
- Verify the stamped working load limit matches the expected load before use
- Ensure the clevis slip hook latch is fully engaged before towing
- Inspect the chain and hook for deformation, cracks, or excessive wear before each use
- Do not exceed the maximum working load limit based on chain diameter
- Keep the chain clean and dry; reapply protective coating if zinc plating is damaged
- Retire the chain if the G43 marking is illegible or the hook shows signs of deformation
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Guides Worth Reading Before You Order
Answers
Grade 43 Trailer Safety Chain FAQ
What is the working load limit for a 3/8" Grade 43 safety chain?
The working load limit is based on standard G43 specifications and depends on the chain diameter. Refer to the published size table for exact values.
Is the chain zinc plated or electro-galvanized?
The standard finish is white/blue zinc plated. Electro-galvanized coating is available upon request.
Can I get a custom length for my trailer?
Yes. Chain lengths can be customized to your specification, including custom diameters and lengths.
What certifications are provided with the order?
A Material Test Certificate to EN 10204 3.1 is supplied with each order. Proof load testing and dimensional checks are documented.
Can you add our company logo or brand name?
Yes. Private label and OEM marking are available on the chain or packaging.
How is the chain assembled?
The clevis slip hook with latch is permanently attached to one end of the chain. The other end is open for connection to the trailer or vehicle.
Can I use this chain for towing a boat trailer?
Yes. The Grade 43 chain with zinc plating is suitable for boat trailers, especially in saltwater environments where corrosion resistance is critical.
Need A Quote On Grade 43 Trailer Safety Chain
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