Shackles
Stainless Steel Long D Shackle
A stainless steel long D shackle made from marine-grade AISI 316, designed for corrosion-resistant rigging in harsh environments. The extended body provides greater clearance for ropes, chains, or cables in tight or complex configurations. Not rated for overhead lifting. Available in standard sizes with a threaded pin for secure fastening.
- Catalogue Family
- Shackles
- 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 Stainless Steel Long D Shackle Gives You
- Marine-grade AISI 316 stainless steel resists saltwater, chemicals, and humidity in offshore and coastal applications
- Extended body length increases clearance between the shackle and the load or anchor point
- Threaded pin allows for secure, repeatable installation and removal without tools
- Corrosion resistance maintains integrity in wet, salty, or chemically aggressive environments
- No galvanic coating or plating required—AISI 316 provides inherent protection without flaking or peeling
- No risk of galvanic corrosion when used with other stainless steel components
- Clean, smooth finish reduces rope and chain wear at the contact point
Application Scenarios
Where Stainless Steel Long D Shackle Is Used
- Marine mooring and anchoring where constant exposure to seawater demands corrosion resistance
- Offshore platform deck rigging where salt spray and humidity accelerate metal degradation
- Fishing vessel gear systems using synthetic or wire rope in saltwater environments
- Coastal construction projects near the shoreline where moisture and chloride exposure are high
- Chemical handling or processing facilities where exposure to corrosive agents is common
- Outdoor rigging in humid climates where rust formation must be avoided
- Non-overhead lifting applications such as securing equipment on trailers or docks
Who It Is For
Buyers This Product Is Built For
- Marine equipment suppliers specifying hardware for offshore and coastal vessels
- Fishing fleet operators maintaining mooring and gear systems in saltwater
- Coastal construction contractors working in high-moisture environments
- Industrial rigging teams handling non-overhead applications in corrosive zones
- Truck and trailer operators securing cargo on open decks exposed to weather
- Rigging distributors carrying marine-grade hardware with proven long-term durability
- Equipment manufacturers integrating corrosion-resistant fittings into marine or outdoor systems
Problems It Solves
Problems This Product Removes
- Rust and pitting forming on carbon steel shackles in saltwater or humid conditions
- Galvanic corrosion occurring when zinc-plated shackles are used with stainless steel components
- Limited clearance in tight rigging setups where a standard shackle body binds or rubs
- Need for frequent replacement of hardware due to surface degradation in harsh environments
- Inadequate material choice for marine or chemical exposure leading to premature failure
- Lack of a reliable non-overhead shackle with extended body for complex rigging paths
- Difficulty sourcing a shackle that combines corrosion resistance with a threaded pin for secure fastening
Technical Features
Technical Features
- Body made from marine-grade AISI 316 stainless steel
- Extended D-shaped body for increased clearance
- Threaded pin with a secure, self-locking design
- Not rated for overhead lifting or vertical suspension
- Smooth internal surfaces to reduce rope and chain wear
- No surface coatings or plating—corrosion resistance comes from material composition
- Working load limit stamped on the body for traceability
Specifications
Stainless Steel Long D Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Material | AISI 316 stainless steel |
|---|---|
| Usage | Not for overhead lifting |
| Surface Finish | Natural polished finish, no coating |
| Pin Type | Threaded pin with self-locking feature |
| Working Load Limit | Stamped on the body for traceability |
Materials
Materials And Finishes
- AISI 316 stainless steel body for high corrosion resistance in marine and chemical environments
- Threaded pin made from the same AISI 316 material for consistent performance and compatibility
- No additional plating or coating—corrosion resistance is inherent in the alloy
- Smooth internal bore to minimize wear on ropes and chains
Manufacturing Process
How This Product Is Made
1Cutting of raw AISI 316 stainless steel bar stock to shackle blank dimensions
2Machining of the D-shaped body and pin threads
3Heat treatment to stabilize the microstructure and enhance durability
4Polishing of the body and pin to a smooth, clean finish
5Assembly of the pin into the body with proper thread engagement
6Stamping of the working load limit and material mark on the body
7Proof load testing and dimensional verification before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm the 4:1 design factor
- Visual inspection for surface defects, cracks, or machining flaws
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body
- Private label and OEM marking available
- Custom sizes and pin configurations built to a supplied drawing
- Custom packing carton and pallet configuration
- Finish options limited to natural polished—no plating or coating
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 |
|---|---|
| Carbon steel shackle with zinc plating | AISI 316 resists saltwater and chemicals without coating degradation; zinc plating wears off and causes galvanic corrosion when paired with stainless steel |
| Standard D shackle | The long body provides more clearance in tight or complex rigging setups but adds length and weight |
| Alloy steel shackle | AISI 316 offers superior corrosion resistance but lower tensile strength than high-grade alloy steel |
| Screw pin shackle | Threaded pin is more secure and less likely to loosen under vibration than a screw pin with a cotter pin |
Use Guide
How To Use And Inspect Stainless Steel Long D Shackle
- Never use this shackle for overhead lifting or vertical suspension
- Inspect the shackle for deformation, cracks, or thread damage before each use
- Ensure the load does not exceed the stamped working load limit
- Keep the pin fully engaged and tightened to prevent accidental disengagement
- Avoid side loading the shackle—keep the load aligned with the bow axis
- Clean the shackle after exposure to saltwater or chemicals to maintain surface integrity
- Retire the shackle if the body shows deformation, the pin threads are stripped, or the marking is unreadable
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Answers
Stainless Steel Long D Shackle FAQ
Is this shackle rated for overhead lifting?
No. This stainless steel long D shackle is not rated for overhead lifting or vertical suspension. It is intended for non-overhead applications only.
What material is used in the shackle?
The body and pin are made from marine-grade AISI 316 stainless steel, which provides high corrosion resistance in harsh environments.
Can I get a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
What finish does the shackle have?
The shackle has a natural polished finish. No plating, coating, or paint is applied—corrosion resistance comes from the AISI 316 material itself.
Can you customise the size or pin type?
Yes. Custom sizes, pin configurations, tonnage stamping, and OEM marking are available. We can build to your drawing or specification.
How is it packed for export?
Standard carton and pallet packing. We can configure the carton count and pallet pattern to suit your warehouse or retail pack. Free storage in Qingdao for up to two months is available.
What is the design factor?
A standard 4:1 design factor is used, meaning the minimum breaking load is four times the safe working load stated on the body.
Need A Quote On Stainless Steel Long D Shackle
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