Shackles
Bolt Type Anchor Shackle Bow Shackles
A drop-forged bolt type anchor shackle with a high-strength alloy steel bolt and nut, designed for heavy-duty rigging and lifting applications. The shackle body is made from super carbon steel, heat-treated and quenched for impact resistance. It features a 4:1 or 6:1 safety factor depending on the product variant, with the working load limit embossed on the body. Available from 3/16" to 4" in size, with a range of surface finishes including hot-dipped galvanized, powder coated, and zinc plated. Used in construction
- 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 Bolt Type Anchor Shackle Bow Shackles Gives You
- Drop-forged super carbon steel body with quench and temper heat treatment for high impact and fatigue resistance
- Alloy steel bolt and nut provide superior tensile strength and resistance to loosening under vibration
- 4:1 or 6:1 safety factor depending on the product variant, with minimum breaking load four or six times the safe working load
- Working load limit embossed on the body for traceability and field identification
- Hot-dipped galvanized, powder coated, or zinc plated finish resists corrosion in harsh environments
- Secure closure with bolt and nut system allows for repeated use and inspection without thread wear
- Available in sizes from 3/16” to 4” with consistent load capacity and dimensional accuracy
Application Scenarios
Where Bolt Type Anchor Shackle Bow Shackles Is Used
- Heavy lifting operations in construction where a secure, high-capacity connection is needed between crane hooks and slings
- Marine and offshore rigging where saltwater exposure demands corrosion-resistant finishes
- Off-road recovery setups using winches and tow straps where the shackle must handle dynamic loads and vibration
- Industrial plant maintenance where equipment is lifted or moved using chain or wire rope systems
- Temporary rigging in infrastructure projects requiring repeatable, traceable connections with clear load ratings
Who It Is For
Buyers This Product Is Built For
- Construction contractors specifying high-capacity rigging hardware for crane lifts
- Marine and offshore service providers needing corrosion-resistant shackles for mooring and lifting
- Off-road recovery kit manufacturers building winch and tow systems for heavy vehicles
- Industrial maintenance teams requiring traceable, durable shackles for plant equipment handling
- Rigging distributors stocking bolt type shackles with clear WLL marking and multiple finish options
Problems It Solves
Problems This Product Removes
- Standard shackles failing under repeated dynamic loads due to inadequate material or heat treatment
- Threaded screw pins loosening under vibration in mobile or marine applications
- Lack of traceability in the field due to missing or illegible load markings
- Corrosion damage on shackles used in coastal or wet environments
- Buying shackles and bolts from separate suppliers, increasing procurement complexity
- Inconsistent safety factors across different shackle types leading to misuse or overloading
Technical Features
Technical Features
- Drop-forged body in super carbon steel, quenched and tempered for strength and toughness
- Alloy steel bolt and nut with high tensile strength and resistance to shear and fatigue
- Working load limit embossed on the body for field traceability
- 4:1 or 6:1 safety factor, depending on the product variant, with minimum breaking load four or six times the WLL
- Hot-dipped galvanized, powder coated, or zinc plated finish to resist corrosion
- Bolt and nut closure system allows for secure, repeatable use and inspection
- Dimensions and tolerances specified in the size table with consistent manufacturing control
Specifications
Bolt Type Anchor Shackle Bow Shackles Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 3/16” to 4” safe working load |
|---|---|
| Material | Body - Super carbon steel, Pin - Alloy steel |
| Safety Factor | 4:1 or 6:1 depending on variant |
| Processing | Drop forged, quenched and tempered |
| Surface Finish | Hot-dipped galvanized, powder coated, or zinc plated |
| WLL Marking | Embossed on body for traceability |
| Dimensions | A, B, H, E, C, G, P in inches as per size table |
| Tolerance | +/- 0.06 in for most dimensions |
| Weight Range | 0.06 lbs to 15.83 lbs per shackle |
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 and shear strength
- Hot-dipped galvanized coating for long-term corrosion protection in outdoor and marine environments
- Powder coat finish for abrasion resistance and visual identification
- Zinc plated surface for moderate corrosion resistance and clean appearance
Manufacturing Process
How This Product Is Made
1Drop forging of the shackle body and bolt pin blanks
2Quench and temper heat treatment of the body and pin for hardness and toughness
3Machining of the bolt thread and body bore to precise tolerances
4Assembly of the bolt and nut with proper torque control
5Surface finishing by hot-dip galvanizing, powder coating, or zinc plating
6Embossing of the working load limit and product code on the body
7Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against the published size table
- Breaking strength validation to confirm the 4:1 or 6:1 design factor
- Visual and tactile inspection of the embossed marking for legibility
- Surface finish thickness and adhesion tested for corrosion resistance
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at the China warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for client-specific load ratings
- Private label and OEM marking for brand-specific packaging
- Finish to order in hot-dipped galvanized, powder coated, or zinc plated
- Custom sizes and dimensions built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, or retail pack
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 system resists loosening under vibration better than a screw pin, which can back out during dynamic use |
| Welded shackle | The drop-forged construction provides higher impact strength and fatigue resistance than a welded shackle, which can fail at the weld joint |
| Screw pin with safety pin | The bolt and nut system allows for full disassembly and inspection, while a screw pin with a safety pin is harder to inspect and re-torque |
| Rigid shackle | The bolt closure allows for secure, repeatable use and inspection, while a rigid shackle has no closure mechanism and is not reusable |
Use Guide
How To Use And Inspect Bolt Type Anchor Shackle Bow Shackles
- Verify the embossed working load limit matches the calculated load, not the equipment rating
- Ensure the bolt is fully tightened with the nut and cotter pin or locking washer in place
- Inspect the bolt and nut for thread damage or corrosion before each use
- Check that the body shows no deformation, cracks, or excessive wear
- Do not use if the embossed marking is worn or illegible
- Retire the shackle if the bolt or nut fails to tighten securely or shows signs of plastic deformation
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Answers
Bolt Type Anchor Shackle Bow Shackles FAQ
What safety factor do these shackles have?
They carry a standard 4:1 or 6:1 safety factor depending on the product variant, with the minimum breaking load four or six times the stated safe working load.
Can the working load limit be customized?
Yes. Custom tonnage stamping is available on the body for client-specific load ratings.
What finishes are available?
Options include hot-dipped galvanized, powder coated, and zinc plated. Custom finishes can be arranged.
Are Material Test Certificates provided?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with each order on request.
Can you supply these in custom sizes?
Yes. Custom sizes and dimensions can be built to a supplied drawing, including custom bolt and pin configurations.
How are they packed for export?
Standard packing is cartons or gunny bags on pallets. We can configure the carton count and pallet pattern to suit your warehouse or retail pack.
What is the tolerance on dimensions?
Dimensions are held to a tolerance of +/- 0.06 inches for most sizes, as specified in the size table.
Need A Quote On Bolt Type Anchor Shackle Bow Shackles
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.