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End shackle was also known as Anchor End Shackle, Which has an oval pin and is generally used to connect the crown shackle of the anchor to the swivel forerunner of the anchor chain. Available in dia 14mm up till 130mm, grade U2 and or/ U3.
Nominal Chain Size
Chain Grade
Proof Load
Minimum Breaking Load
Material Grade
Classification Approval
End Shackle is a forged anchor chain accessory designed to connect the end link of an anchor chain to an anchor, swivel, or other anchoring components. Manufactured from forged alloy steel, the shackle provides a detachable connection while maintaining the required mechanical strength and dimensional compatibility with the corresponding anchor chain. Standard products are available for U2 and U3 anchor chain grades, matching chain diameters from 12.5 mm to 162 mm. Each shackle is proof tested, inspected, and permanently marked to ensure complete product traceability.
Materials: CM490/CM690
The End Shackle, also known as an Anchor End Shackle, is a critical component in any marine mooring system. Its primary function is to create a secure, load-bearing connection between the crown shackle of the anchor and the first link of the anchor chain (or swivel forerunner). The integrity of this single fitting is essential for the safety and reliability of the entire anchoring assembly.
At TopOne Chain, we manufacture our End Shackles from high-tensile, forged alloy steel, ensuring maximum strength and resistance to the harsh marine environment. Designed with a distinctive oval pin, our shackles are available in Grade U2 and U3 to match the specifications of your anchor chain. Each shackle is engineered for durability, providing a secure and dependable connection you can trust.
End Shackle is a forged connecting component used at the terminal end of an anchor chain assembly. It provides the connection between the anchor chain and the anchor, swivel, enlarged end link, or other anchor chain accessories, forming part of a complete marine anchoring system.
The shackle is manufactured from forged alloy steel through closed-die forging, followed by machining, heat treatment, dimensional calibration, and mechanical testing. The assembly typically consists of a shackle body, main pin, locking pin, and lead plug. After assembly, the locking components secure the main pin to prevent movement during repeated anchor deployment, retrieval, and continuous vessel loading.
End Shackles are manufactured to match the dimensions and strength requirements of stud link and studless anchor chains. Standard products are available for U2 and U3 chain grades with nominal chain diameters from 12.5 mm to 162 mm. They are widely used on container ships, bulk carriers, oil tankers, LNG carriers, offshore platforms, FPSOs, naval vessels, floating docks, and permanent mooring systems.
Forged alloy steel construction
Designed for anchor chain end connections
Compatible with stud link and studless anchor chains
Available for U2 and U3 chain grades
Heat treated and proof tested
Suitable for marine anchoring and offshore mooring systems
Permanent identification marking and complete traceability
Our End Shackles are available in a full range of sizes to accommodate various anchor chain dimensions. The table below details some of our common specifications.
Technical Specifications
Nominal Size (mm) | Grade | Material | Min. Breaking Load (kN) | Weight (kg) |
14 | U2 | CM490 | 84 | 1.1 |
14 | U3 | CM690 | 118 | 1.1 |
22 | U2 | CM490 | 204 | 4.5 |
22 | U3 | CM690 | 286 | 4.5 |
34 | U2 | CM490 | 470 | 15.5 |
34 | U3 | CM690 | 658 | 15.5 |
50 | U2 | CM490 | 990 | 45.0 |
50 | U3 | CM690 | 1380 | 45.0 |
TopOne Chain is committed to the highest standards of quality and safety. Our End Shackles are manufactured and tested in accordance with international marine standards to guarantee performance and reliability.
Manufacturing and Quality Standards
Feature | Standard & Specification |
Material Grades | U2 (CM490) and U3 (CM690) forged alloy steel, quenched and tempered. |
Manufacturing Process | Drop-forged and heat-treated for superior tensile strength and fatigue resistance. |
International Standard | Manufactured in accordance with ISO 1704 and other classification society rules. |
Surface Finish | Standard black bitumen paint. Hot-dip galvanized (HDG) finish available upon request for enhanced corrosion protection. |
Testing & Certification | All shackles are proof load tested and can be delivered with certificates from major classification societies (e.g., ABS, DNV, LRS, BV). |
Key Quality Features:
• Full Traceability: Every shackle is marked with its grade and manufacturer's ID for full traceability.
• Robust Design: The oval pin design is engineered for a secure fit and easy installation.
• Proven Durability: Designed to withstand the dynamic loads and corrosive conditions of marine environments.
Name: End Shackle MOQ: 100 Pieces Package: Steel Pallet / Wooden Crate / Bulk Packing Manufacturing Standards: Manufactured from forged alloy steel in accordance with IACS Unified Requirement W18, IACS Unified Requirement A1, ISO 1704, and the applicable requirements of ABS, BV, CCS, DNV, LR, NK, KR, RINA, and RS for anchor chain accessories. All load-bearing components are forged, heat treated, and machined to match the mechanical properties and dimensions of the corresponding anchor chain grade. Testing Standards: Each end shackle undergoes chemical composition verification, forging inspection, heat treatment verification, dimensional inspection, proof load testing, mechanical property testing, hardness testing, magnetic particle inspection (MPI) where applicable, visual inspection, assembly verification, and permanent identification marking before shipment. Material certificates, inspection reports, and classification society certificates are available upon request. Application Standards: Suitable for connecting anchor chains to anchors, swivels, enlarged end links, and other anchoring components on commercial ships, container vessels, bulk carriers, oil tankers, LNG carriers, offshore platforms, FPSOs, floating docks, naval vessels, and permanent mooring systems. Maintenance Standards: Inspect the shackle regularly for body deformation, pin wear, locking pin condition, lead plug integrity, corrosion, cracks, excessive wear, and identification markings. Verify that all locking components remain securely installed after anchor handling operations. Replace damaged or excessively worn shackles immediately in accordance with the inspection requirements of the applicable classification society to maintain anchoring system integrity.
