Shackles
European Large Bow Shackle with Screw Collar Pin
A large bow shackle with a screw collar pin, designed for heavy-duty rigging and lifting applications. The U-shaped body is made from carbon steel or stainless steel, drop forged for strength, with a threaded pin secured by a collar nut. Available in sizes from M5 to M50, it provides a secure connection point for chains, ropes, and slings across construction, maritime, and off-road recovery projects. The 3:1 safety factor ensures reliable performance under load.
- Size
- M5-M50 Package: Carton/Gunny bag/Pallet / As customer's requirements
- Material
- Carbon Steel or Stainless Steel Process: Free Forging Surface: Electric galvanized
- 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 European Large Bow Shackle Gives You
- Drop-forged carbon steel or stainless steel body resists deformation under heavy dynamic loads
- Screw collar pin with locking nut prevents loosening under vibration and multi-directional stress
- 3:1 safety factor meets standard industrial requirements for lifting and rigging
- Threaded pin with collar nut allows secure tightening without tools in the field
- Electric galvanized surface finish resists rust and corrosion in outdoor and marine environments
- Standardized dimensions across M5 to M50 allow consistent fit with existing rigging systems
- Compact design reduces bulk while maintaining high load capacity for tight installation spaces
Application Scenarios
Where European Large Bow Shackle Is Used
- Marine anchor and mooring systems where the shackle must resist saltwater corrosion and constant tension
- Off-road recovery operations using winches and tow straps where vibration and shock loads are common
- Construction site lifting where chains and slings are connected with a reliable, reusable link
- Industrial rigging setups involving heavy machinery or structural components requiring secure attachment
- Port and dock operations where shackles are exposed to moisture, weather, and repeated handling
Who It Is For
Buyers This Product Is Built For
- Marine equipment suppliers specifying anchor and mooring hardware for vessels
- Off-road recovery kit manufacturers integrating heavy-duty shackles into winch systems
- Construction and crane operators sourcing reliable rigging connectors for lifting operations
- Industrial contractors needing durable, corrosion-resistant shackles for long-term use
- Rigging distributors carrying a full range of shackles who require consistent quality and traceability
Problems It Solves
Problems This Product Removes
- Loosening of shackle pins under vibration during long hauls or dynamic lifting
- Corrosion and surface degradation in marine or outdoor environments due to poor finish
- Inconsistent load capacity from low-grade or poorly manufactured shackles
- Need for multiple shackle types when a single robust design can handle varied applications
- Lack of traceability and certification in low-cost imported shackles
- Buying shackles from multiple suppliers for different sizes and finishes
Technical Features
Technical Features
- U-shaped body made from drop-forged carbon steel or stainless steel
- Threaded pin with screw collar nut for secure locking under load
- 3:1 safety factor between minimum breaking load and safe working load
- Electric galvanized surface finish for corrosion resistance
- Standardized dimensions across M5 to M50 with clear S.W.L. and marking
- Pin and collar nut designed for hand tightening and field adjustment
- Working load limit stamped on the body for traceability and compliance
Specifications
European Large Bow Shackle Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 80T to 8000T safe working load |
|---|---|
| Material | Carbon steel or stainless steel |
| Process | Drop forging |
| Surface Finish | Electric galvanized |
| Safety Factor | 3:1 minimum breaking load to safe working load |
| Size Range | M5 to M50 |
| Pin Type | Screw collar pin with nut |
| S.W.L. Dimensions | M5: d 5 D 10 a 19 c 8 r 11 b 11 80T 2.2 kg per 100 pcs |
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
- Drop-forged carbon steel body for high impact and tensile strength
- Stainless steel option available for marine and corrosive environments
- Threaded pin and collar nut made from hardened steel to resist shear and wear
- Electric galvanizing layer applied to the entire body for rust and weather resistance
Manufacturing Process
How This Product Is Made
1Raw steel billets heated and drop forged into bow and pin shapes
2Heat treatment to enhance strength and toughness of the forged parts
3Machining of threads on the pin and collar nut to precise tolerances
4Assembly of pin and collar nut with final tightening check
5Electric galvanizing process applied to the entire shackle
6Stamping of safe working load and marking on the body
7Proof load testing and dimensional verification before packing
Quality Control
Quality Control On Every Batch
- Proof load test conducted on production batches before release
- Dimensional tolerance checked against published size table
- Breaking strength validated to confirm 3:1 safety factor
- Surface finish inspected for uniformity and coverage
- 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 bow for client-specific marking
- Private label and OEM marking available for brand integration
- Surface finish options including electric galvanizing, zinc plating, or powder coating
- Sizes and configurations built to a supplied drawing
- Packing configured as carton, gunny bag, pallet, or as per customer 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 | The screw collar pin locks more securely under vibration than a standard screw pin, reducing the risk of loosening during dynamic use |
| Lift pin shackle | The screw collar pin allows for easier field adjustment and tighter locking than a lift pin, but the lift pin may be faster to install in static applications |
| Rigid pin shackle | The screw collar pin provides a secure, adjustable connection while the rigid pin offers simplicity and lower cost but cannot be tightened in the field |
| Welded shackle | The drop-forged construction offers higher strength and impact resistance than a welded shackle, which may fail at the weld under shock loading |
Use Guide
How To Use And Inspect European Large Bow Shackle
- Verify the stamped safe working load matches the calculated line load, not the equipment rating
- Ensure the collar nut is fully tightened and the pin is fully seated before applying load
- Inspect the shackle before each use for deformation, thread damage, or finish wear
- Do not use if the collar nut is stripped or the pin cannot be tightened properly
- Avoid side loading the shackle; keep the pull aligned with the bow axis
- Retire the shackle if the body shows permanent deformation, the pin is damaged, or the marking is unreadable
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Answers
European Large Bow Shackle FAQ
What safety factor do these shackles have?
A standard 3:1 safety factor, so the minimum breaking load is three times the stated safe working load.
Can I get a Material Test Certificate?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
What sizes are available?
Sizes range from M5 to M50, with safe working loads from 80T to 8000T. Full dimensions and weights are listed in the product table.
Is the surface finish corrosion-resistant?
Yes. The electric galvanized finish provides resistance to rust and weathering in outdoor and marine environments.
Can I customize the tonnage marking and branding?
Yes. Custom tonnage stamping, private label marking, and OEM branding are standard options.
How are they packed for export?
Standard packing is cartons on pallets. We can configure carton count and pallet pattern to match your warehouse or retail requirements. Free storage in Qingdao for up to two months is available.
Are these shackles suitable for marine use?
Yes. The electric galvanized finish resists saltwater corrosion. Stainless steel is also available for harsh marine environments.
Need A Quote On European Large Bow Shackle
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