Shackles
Rigging Shackle Grade S(6) Bow Shackle
A drop-forged alloy steel bow shackle with a threaded screw pin, designed for heavy-duty lifting and rigging applications. It provides a secure connection point between chains, slings, wire ropes, and other lifting components. Available in working load limits from 0.5T to 150T, with body and pin finishes including hot-dipped galvanized, powder coated, and zinc plated. The shackle is manufactured to Grade S(6) strength and features a 4:1 design factor.
- Size
- WLL From 0.5 Ton to 1500 Ton
- Finish
- Body-Hot Dipped Galvanized / Powder Coated / Zinc Plated Screw Pin-Powder Coated / Zinc Plated
- Packing
- Cartons or Gunny Bags and then on Pallets
- 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 Rigging Shackle Grade S Gives You
- Drop-forged body in heat-treated alloy steel ensures high impact resistance and load capacity
- Threaded screw pin with nut allows for secure closure and field adjustment with hand tools
- Standard 4:1 design factor ensures minimum breaking load is four times the safe working load
- Available in multiple finishes including hot-dipped galvanized, powder coated, and zinc plated for corrosion resistance
- Wide range of working load limits from 0.5T to 150T covers light to heavy industrial lifting needs
- Single-piece construction with a U-shaped body and through-pin design reduces risk of failure at the joint
- Traceability marking stamped on the body for field identification and compliance tracking
Application Scenarios
Where Rigging Shackle Grade S Is Used
- Heavy lifting operations in construction and infrastructure projects where secure, repeatable connections are required
- Marine and offshore rigging where exposure to saltwater demands corrosion-resistant finishes
- Industrial manufacturing setups using chain and wire rope systems for moving large components
- Transport and logistics operations involving container handling and truck-mounted cranes
- Oil and gas field installations requiring reliable, traceable rigging hardware under high-stress conditions
- Steel fabrication yards where shackles are used to connect and move heavy steel sections
- Temporary rigging setups in mining and drilling projects with variable load profiles
Who It Is For
Buyers This Product Is Built For
- Procurement engineers sourcing rigging hardware for industrial lifting systems
- Marine contractors specifying corrosion-resistant shackles for offshore and port operations
- Construction site managers requiring traceable, code-compliant rigging components
- Logistics operators building container handling and transport equipment
- Rigging distributors carrying a full range of shackles with consistent quality and finish
- Manufacturers of lifting equipment integrating shackles into their assemblies
Problems It Solves
Problems This Product Removes
- Inconsistent load capacity and material quality from unverified suppliers with no traceability
- Corrosion damage in marine or outdoor environments due to inadequate surface treatment
- Pin loosening under vibration or dynamic load due to poor locking mechanism
- Need to source shackles from multiple suppliers for different tonnages and finishes
- Lack of material test certificates and proof load records for audit or compliance purposes
- Inadequate design factor or hidden safety margins in low-cost imported shackles
- Difficulty in verifying the correct working load limit when markings are unclear or missing
Technical Features
Technical Features
- Drop-forged body in heat-treated alloy steel with quench and temper process
- Threaded screw pin made from hot or cold forged alloy steel, quenched and tempered
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Working load limit and grade stamped on the body for field traceability
- Available in hot-dipped galvanized, powder coated, or zinc plated finishes on body and pin
- Threaded pin with nut for secure closure and field adjustment
- Designed to meet Grade S(6) strength requirements with dimensional tolerance checks
Specifications
Rigging Shackle Grade S Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 0.5T to 150T safe working load |
|---|---|
| Material | Drop forged alloy steel quenched and tempered |
| Pin Type | Threaded screw pin with nut |
| Design Factor | 4:1 minimum breaking load to safe working load |
| Surface Finish | Hot-dipped galvanized powder coated or zinc plated |
| Grade | S(6) |
| WLL 0.5T Dimensions | W 12 D 8 d 6.5 E 15.5 P 6.5 S 29 O 20 L 36.5 BW type weight 0.05 kg |
| WLL 150T Dimensions | W 140 D 110 d 104 E 228.5 P 116 S 368 O 254 L 489 BX type weight 165.9 kg |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Alloy steel body drop forged then quenched and tempered for high strength and impact resistance
- Threaded screw pin made from hot or cold forged alloy steel, quenched and tempered
- Hot-dipped galvanized finish for outdoor and marine corrosion protection
- Powder coated or zinc plated finish for industrial and indoor environments
- Stainless steel components used where applicable for long-term durability in harsh conditions
Manufacturing Process
How This Product Is Made
1Drop forging of the bow body and pin blanks
2Quench and temper heat treatment of the forged blanks
3Machining of the pin thread and body bore
4Assembly of the pin and nut with torque control
5Surface finishing by hot-dip galvanizing, powder coating, or zinc plating
6Stamping of working load limit and grade on the body
7Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection of the body and pin for cracks, burrs, or defects
- 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 for specific load ratings
- Private label and OEM marking available for brand integration
- Finish to order in hot-dipped galvanized, powder coated, or zinc plated
- Sizes and pin configurations built to a supplied drawing
- Packing carton and pallet configuration tailored to 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 |
|---|---|
| Screw pin shackle with cotter pin | The threaded screw pin with nut allows for tighter control and easier field adjustment, but a cotter pin version may be faster to install in non-vibration environments |
| Bolt pin shackle | The screw pin version is more compact and easier to adjust in the field, but a bolt pin with nut and cotter is more resistant to accidental loosening under vibration |
| Rigid shackle | The screw pin design allows for easier disassembly and reassembly, but a rigid shackle has no moving parts and is simpler to inspect |
| Soft shackle | Steel shackle handles abrasion and high loads better than soft shackles, but is heavier and less flexible in dynamic applications |
Use Guide
How To Use And Inspect Rigging Shackle Grade S
- Verify the stamped working load limit matches the calculated load, not the equipment rating
- Ensure the screw pin is fully threaded and tightened with a wrench before use
- Inspect the pin and body for deformation, cracks, or wear before each use
- Check that the thread is clean and free of debris to prevent binding
- Avoid side loading the shackle; keep the pull aligned with the bow axis
- Retire the shackle if the body shows deformation, the pin is stripped, or the marking is unreadable
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Answers
Rigging Shackle Grade S FAQ
What is the design factor for these shackles?
A standard 4:1 design factor, so the minimum breaking load is four times the stated safe working load.
Are Material Test Certificates available?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with the order on request.
What finishes are available?
Body and pin finishes include hot-dipped galvanized, powder coated, and zinc plated. Custom finishes are available on request.
Can you custom stamp our tonnage and brand?
Yes. Custom tonnage stamping, private label marking, and OEM packaging are standard options.
What is the capacity range?
Working load limits range from 0.5T to 150T, with dimensions and weights provided in the size table.
How are they packed for export?
Cartons or gunny bags on pallets as standard. We can configure packing to suit your warehouse or retail needs.
Can you hold goods in your warehouse?
Yes. Free warehouse storage in Qingdao for up to two months to help consolidate shipments.
Need A Quote On Rigging Shackle Grade S
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.