Bolt Type D Shackle


About product

The Bolt Type D Shackle, also known as a bolt type D ring shackle, is a marine chain shackle designed for rigging systems. It is forged, quenched, and tempered with an alloy pin for enhanced strength and durability. This chain shackle serves as a reliable connecting link, meeting the Federal Specification: RR-C-271D Type IVA, Grade A, Class 2.

D Ring Shackle Drawing

bolt type d shackle

Additional information


Galvanised steel

Safety Factor




Product Detail

Best D Ring Shackle For Sale

A D ring shackle, available in sizes from 0.5t to 55t, exhibits a narrow loop shape reminiscent of a chain link. Widely utilized in rigging setups, they excel at handling high loads along the line. However, it’s crucial to consider that D ring shackles may experience twisting or bending under side or racking loads.

How Does Bolt Type D Shackle Work In Marine Operation?

In marine operations, a bolt type D shackle plays a crucial role in connecting various components and equipment. Here’s how it works:

  • Connecting Anchor Chain to Anchor: One common application of a D shackle in marine operations is connecting the anchor chain to the anchor itself. The shackle allows for a secure and reliable connection between the two. The D-shaped body of the shackle provides a large opening, making it easy to pass the anchor chain through it.
  • Attaching Rigging Components: The D ring shackles are also used to attach rigging components in marine operations. For example, they can be used to secure lifting slings, connecting them to hoisting equipment or other points of attachment on a vessel. The threaded bolt or pin on the shackle ensures a tight fit, preventing accidental disconnection.
  • Securing Equipment: In marine operations, equipment such as buoys, fenders, or mooring lines often need to be securely fastened. A D shackle is utilized to connect these items to appropriate mounting points or structures on the vessel. The shackle’s sturdy construction and secure closure mechanism ensure that the equipment remains in place, even in demanding marine conditions.

D Shackle Parameter – Bolt Type Marine Chain Shackle

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About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.


Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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