Shackles
Heavy Duty Shackle Bolt Type Anchor / Bow Shackles
A drop-forged alloy steel bow shackle with a bolt and nut closure, designed for high-capacity rigging and lifting applications. Built to withstand heavy loads with a standard 4:1 design factor, it provides a secure connection point between chains, ropes, and slings. Available from 3/16" to 4" in size with working load limits stamped on the body. Finishes include hot dipped galvanized, powder coated, or zinc plated.
- Size
- From 3/16"to 4" WLL ,Size embossed on each shackle
- Material
- Body-Super Carbon Steel. Screw Pin-Alloy Steel
- Finish
- Body-Hot Dipped Galvanized / 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 Heavy Duty Shackle Bolt Type Anchor Gives You
- Drop-forged body in super carbon steel with quench and temper heat treatment for high impact resistance
- Bolt and nut closure prevents accidental opening under dynamic load and vibration
- Standard 4:1 design factor ensures minimum breaking load is four times the safe working load
- Working load limit stamped on the body for traceability and field verification
- Hot dipped galvanized, powder coated, or zinc plated finish resists corrosion in harsh environments
- Available in sizes from 3/16” to 4” with WLLs clearly marked on each unit
- Secure connection point for chains, ropes, and slings in construction, marine, and recovery applications
Application Scenarios
Where Heavy Duty Shackle Bolt Type Anchor Is Used
- Heavy lifting operations in construction sites where rigging components must handle sustained high loads
- Marine and offshore applications where exposure to saltwater demands corrosion-resistant finishes
- Off-road vehicle recovery using winches and heavy cables where connection integrity is critical
- Industrial rigging setups involving steel structures, cranes, and heavy machinery
- Lifting and moving large components in manufacturing and infrastructure projects
Who It Is For
Buyers This Product Is Built For
- Construction contractors specifying rigging hardware for crane and lift operations
- Marine and offshore operators needing corrosion-resistant shackles for mooring and lifting
- Industrial maintenance teams requiring durable, traceable shackles for high-load tasks
- Rigging distributors stocking high-capacity shackles with clear WLL marking
- Fleet and recovery service providers building winch and towing kits for heavy-duty use
Problems It Solves
Problems This Product Removes
- Accidental pin loosening under vibration in dynamic lifting or recovery operations
- Lack of traceability in rigging hardware due to missing or unclear working load limits
- Corrosion damage in marine or outdoor environments from untreated steel shackles
- Inconsistent load capacity across different shackle types when sourcing from multiple suppliers
- Need for a single supplier to provide a full range of high-capacity shackles with certified finishes
- Buying shackles with unverified safety factors or no proof load testing
Technical Features
Technical Features
- Drop-forged body in super carbon steel, quenched and tempered for strength
- Bolt and nut closure with alloy steel pin for secure, vibration-resistant fit
- Standard 4:1 design factor unless otherwise specified
- Working load limit stamped on the body for field traceability
- Available in sizes from 3/16” to 4” with corresponding WLLs
- Finish options: hot dipped galvanized, powder coated, or zinc plated
- Designed for use with chains, ropes, and slings in lifting and rigging systems
Specifications
Heavy Duty Shackle Bolt Type Anchor Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 3/16” to 4” size, WLL stamped on each shackle |
|---|---|
| Material | Body - Super carbon steel, Pin - Alloy steel |
| Design Factor | 4:1 standard, 6:1 available on request |
| Processing | Drop forged, quenched and tempered |
| Surface Finish | Hot dipped galvanized, powder coated, or zinc plated |
| Working Load Limit | Stamped on body for traceability |
| Dimensions | A, B, H, E, C, G, P, C A listed in inches and tolerance ±0.06 |
| Weight Range | 0.06 lbs to 15.83 lbs per unit |
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
- Super carbon steel body, drop forged and heat treated for high strength and impact resistance
- Alloy steel bolt and nut for superior tensile strength and resistance to loosening
- Hot dipped galvanized coating for long-term corrosion protection in wet or salty environments
- Powder coat or zinc plating as alternative finishes for durability and appearance
- Stainless steel components not used unless specified in customization
Manufacturing Process
How This Product Is Made
1Drop forging of the bow and pin blanks from super carbon steel
2Quench and temper heat treatment to achieve required hardness and strength
3Machining of the bolt thread and pin bore to precise tolerances
4Assembly of the bolt, nut, and pin with final fit check
5Surface finishing by hot dipped galvanizing, powder coating, or zinc plating
6Stamping of working load limit and size on the body
7Proof load testing and inspection 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 4:1 design factor
- Visual inspection for surface defects, finish uniformity, and marking clarity
- 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 WLLs
- Private label and OEM marking available for brand integration
- Finish to order: hot dipped galvanized, powder coated, or zinc plated
- Custom sizes and assemblies built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, or retail needs
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 bolt and nut closure is more secure under vibration and dynamic load, while screw pins require regular inspection to prevent loosening |
| Standard carbon steel shackle | This version uses super carbon steel with quench and temper treatment for higher strength and impact resistance |
| Non-stamped shackle | Each unit has the WLL and size stamped for traceability, reducing risk of misuse |
| Uncoated shackle | Galvanized or coated finishes extend service life in corrosive environments |
Use Guide
How To Use And Inspect Heavy Duty Shackle Bolt Type Anchor
- Verify the stamped working load limit matches the calculated load before use
- Ensure the bolt and nut are fully tightened with a wrench before applying load
- Inspect the shackle for deformation, wear, or finish damage before each use
- Do not exceed the 4:1 design factor unless a 6:1 version is specified
- Avoid side loading the shackle; keep the load aligned with the bow axis
- Retire the shackle if the body shows deformation, the bolt is stripped, or the marking is illegible
Related Products
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Crosby Wide Body Shackles
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Wide Body Shackle Crosby G-2160
Lugless Joining Shackle - Kenter Link - End Shackle -Swivel Set
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Kenter Shackle - Anchor Chain Fittings
Screw Pin Chain Shackle D Type
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Answers
Heavy Duty Shackle Bolt Type Anchor FAQ
What is the design factor for these shackles?
Standard 4:1 design factor. A 6:1 option is available on request.
Are the working load limits stamped on the shackle?
Yes, each shackle has its WLL and size embossed on the body for traceability.
What finishes are available?
Hot dipped galvanized, powder coated, or zinc plated. Custom finishes can be arranged.
Can you provide Material Test Certificates?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied on request with each order.
Is there a minimum order quantity?
No MOQ is specified in the facts. Orders can be placed for any quantity.
Can you custom stamp our brand or tonnage?
Yes, custom tonnage stamping, private label marking, and OEM packaging are standard options.
How are they packed for export?
Cartons or gunny bags on pallets. We can configure packing to suit your warehouse or retail needs.
Need A Quote On Heavy Duty Shackle Bolt Type Anchor
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.