Marine Safety Pin Anchor Shackle Features
Our safety pin anchor shackle, a reliable and durable solution designed to meet your safety needs. Our marine shackles meet the stringent performance requirements of Federal Specification RR-C-271F Type IVA, Grade A, Class 3, ensuring their quality and reliability.
These marine shackles are available in a wide range of capacities, from 1/3 through 150 metric tons, catering to various load requirements. Rest assured, each shackle is proof tested and can be accompanied by certificates, meeting designated standards for your peace of mind.
To suit different preferences, we offer optional finishes such as Hot-Dip Galvanization (HDG), Electro-Galvanization (EG), or powder paint coatings. These protective coatings enhance the forged shackles’ resistance to corrosion and ensure long-lasting performance.
With a safety factor of 6:1, you can trust our safety pin anchor shackles to provide an additional layer of security in critical applications. These forged shackles have a temperature range of -20℃ to 200℃, allowing for dependable operation across various environmental conditions.
Whether it’s for heavy-duty lifting, rigging, or securing applications, our anchor shackles offer the reliability, strength, and versatility you need. Choose our marine shackles to ensure safety and peace of mind in your operations.
Marine Safety Pin Anchor Shackle Drawing

The Importance of Safety Pin in Anchor Shackle
The marine shackle pin in a marine safety pin anchor shackle serves a crucial function in ensuring the secure and reliable connection of the shackle. Its primary role is to hold the two sides or legs of the shackle together, preventing accidental disengagement during lifting or rigging operations.
The shackle pin is a cylindrical metal rod or bolt that passes through the ears or eyes of the shackle, effectively joining them and creating a closed loop. It is typically threaded at one end to allow for easy installation and adjustment. The opposite end may have a hole or recess for accommodating a cotter pin or safety pin.
The primary function of the shackle pin is to maintain the integrity and strength of the shackle assembly under load. It ensures that the two sides of the shackle remain securely connected, distributing the load evenly across the shackle’s ears or eyes. This helps to prevent stress concentrations and potential failure points, ensuring the safe and efficient transfer of loads.
In a marine safety pin anchor shackle, the shackle pin incorporates a safety pin or cotter pin hole. This additional feature provides an extra layer of security by preventing the shackle pin from unintentionally loosening or coming out of the shackle. The safety pin or cotter pin is inserted through the hole, holding the shackle pin in place and further securing the connection.
Marine Safety Pin Anchor Shackle Size Chart