Screw Pin Shackles

At Holloway Houston, we offer a wide range of screw pin shackles designed for heavy-duty lifting and rigging applications. We carry shackles from trusted manufacturers like Green Pin, Crosby, and Yoke. With a selection of over 200 products, our screw pin shackles are available in various sizes, materials, and configurations to meet the demands of industries such as construction, shipping, offshore, and mining. These shackles are designed to provide a connection for lifting, rigging, and securing loads.

Understanding Screw Pin Shackles

Screw pin shackles are commonly used in rigging systems that use a threaded pin for fastening. The screw pin design allows for easy connection and disconnection, making them highly convenient for applications that require frequent assembly and disassembly. These shackles are used for environments where high strength and quick attachment/detachment are necessary. The threaded pin makes sure that the connection stays intact even under heavy loads or challenging conditions, making them suitable for heavy-duty lifting and rigging tasks.

Screw pin shackles come in two main types:

• Bow Shackles: Featuring a rounded shape, bow shackles are designed for use with multi-leg slings. They allow for the attachment of multiple slings to a single point, making them suitable for different lifting operations.
• Dee Shackles: These shackles have a straight body and are typically used for direct attachments to chains, hooks, or other rigging components, providing a compact and strong connection for heavy-duty applications.

These shackles are used in many industries to connect chains, slings, and other rigging components. Their primary function is to create a link between lifting equipment during operations.

Key Features of Screw Pin Shackles

Materials: Screw pin shackles are available in various materials to meet specific application needs:

• Carbon Steel: Commonly used for general lifting applications, carbon steel offers an effective balance of strength and cost-efficiency, making it suitable for non-corrosive environments.
• Stainless Steel: Best suited for marine and chemical environments, stainless steel shackles are resistant to corrosion, providing long-lasting performance in harsh conditions.
• Alloy Steel: Known for its higher strength, alloy steel shackles are used in heavy-duty lifting applications where extreme loads are encountered.
• Galvanized Steel: Coated with zinc to protect against corrosion, galvanized steel shackles are suitable for outdoor applications exposed to moisture and weather.

Sizes and Configurations: Our screw pin shackles come in a variety of sizes ranging from 3/16" to 23.83" in diameter, with Working Load Limits (WLL) ranging from 0.33 tons (660 lbs) to 400 tons. This selection ensures that we have the right size for any job, from lightweight to heavy-duty tasks.

Here are some common sizes and their typical applications:

Design Specifications

Pin Diameter: Pin diameters range from 0.38" to 8.5" depending on the shackle size. Larger pins offer increased strength for heavy-duty lifting.

Throat Opening: The throat opening varies based on shackle size, with typical measurements ranging from 0.38" to 8.5". This is important for compatibility with slings and other rigging components.

Bow Diameter: Bow shackles feature a wider bow for multi-leg sling use. The wider the bow, the more slings can be attached to the shackle.

Applications of Screw Pin Shackles

• Construction: Screw pin shackles are used in construction for lifting steel beams, pipes, and heavy machinery. Their ability to fasten loads under challenging conditions makes them suitable for lifting equipment and securing cranes.
• Shipping & Marine: In the shipping and marine industries, screw pin shackles are essential for mooring ships and securing cargo. They are also used in offshore oil and gas operations, where exposure to harsh conditions requires strong connections.
• Mining: Screw pin shackles are used in mining operations to handle heavy-duty tasks like securing drilling rigs, conveyors, and machinery. Alloy steel shackles are particularly helpful in these environments.
• Agriculture: Screw pin shackles are used in agriculture to lift and transport large machinery, hay bales, and irrigation equipment. Their corrosion-resistant materials are especially beneficial for outdoor use.
• Utilities: In the utilities industry, screw pin shackles are used for lifting and installing power poles, transformers, and large equipment, providing safe and efficient operations.

Safety and Inspection

Key Safety Practices:

• Check WLL: Always verify the WLL to prevent overloading, which can lead to failure.
• Inspect Regularly: Perform routine inspections for wear, cracks, corrosion, or deformation.
• Secure the Pin: Make sure the screw pin is tightly fastened to avoid loosening during use.
• Avoid Sharp Edges: Use edge protectors to prevent damage to slings and rigging materials.

Inspection Standards: Follow safety guidelines like OSHA and ASME B30.26 to maintain safe use of screw pin shackles in lifting operations.

Related Products

• Chains: Our Alloy Chain Slings are great for heavy-duty lifting.
• Hooks: Clevis Hooks make it easy to attach lifting slings.
• Wire Rope: Our Wire Rope Slings are ideal for flexible and strong lifting solutions.

Why Choose Holloway Houston?

• Top Brands: We carry shackles from industry leaders like Crosby, Green Pin, and Yoke.
• Selection: Choose from a variety of sizes, materials, and WLLs to meet your needs.
• Expert Assistance: Our knowledgeable team is here to help with product selection and technical support.

Get Started Today

Browse our full range of screw pin shackles or contact us for expert advice. We also offer custom fabrication services for specialized lifting applications.