G80 Master Link Assembly A345: The Engineered Core of High-Performance Lifting Systems

In demanding industrial environments—where safety, precision, and strength are non-negotiable—the G80 Master Link Assembly A345 stands out as a critical component in certified lifting and rigging operations. Designed for heavy-duty applications and built to meet rigorous international standards, this assembly is far more than just a connector—it’s the engineered heart of a reliable, balanced, and compliant lifting system.

What Is the G80 Master Link Assembly A345?

The G80 Master Link Assembly A345 refers to a pre-configured, high-strength rigging component that typically includes a Grade 80 forged master link (often oblong or pear-shaped) integrated with compatible hardware such as shoulder bolts, nuts, and locking pins, all designed to work as a unified system. It complies with standards such as ASTM A342/A342M, with “A345” commonly denoting a specific assembly configuration used in multi-leg sling setups.

Key features include:

• Grade 80 Alloy Steel Construction: Forged and heat-treated to achieve a minimum tensile strength of 800 N/mm² (116,000 psi), making it suitable for overhead lifting.
• Integrated Design: Comes as a ready-to-use assembly, reducing on-site errors and ensuring component compatibility.
• High Working Load Limit (WLL): Available in various sizes, with WLLs ranging from 2,650 lbs (1,200 kg) up to 26,400 lbs (12,000 kg) or more, depending on the model.
• Permanent Markings: Clearly stamped with grade, WLL, manufacturer ID, and traceability codes for compliance and inspection.

How Is It Used?

The G80 Master Link Assembly A345 is primarily used as the top connection point in multi-leg chain slings, where multiple chains or slings converge before attaching to a crane hook or hoist. Common applications include:

• Industrial manufacturing (lifting machinery, molds, and structural steel).
• Steel mills and foundries, where extreme heat and heavy loads demand certified hardware.
• Oil & gas, mining, and energy sectors, for safe handling of critical equipment.
• Transport and heavy hauling, when integrated into certified load-securement systems.

Its assembly design ensures:

• Even load distribution across all sling legs.
• Smooth articulation to prevent binding or twisting.
• Quick, secure installation without the need to source individual components.

Why Choose a G80 Assembly Over Loose Components?

1. Guaranteed Compatibility: All parts are tested and rated as a system—no guesswork.
2. Time Savings: Ready to install straight out of the box.
3. Enhanced Safety: Eliminates risk of mismatched grades or improper pin installation.
4. Regulatory Compliance: Meets OSHA, ASME B30.9, and DOT requirements for lifting hardware.

Safety & Inspection Guidelines

• ✅ Inspect the entire assembly before each use for cracks, deformation, or wear.
• ✅ Ensure all pins and nuts are fully secured and not loose or damaged.
• ✅ Never exceed the marked Working Load Limit (WLL).
• ✅ Use only with other Grade 80 components to maintain system integrity.
• ✅ Retire immediately if exposed to shock loads, extreme heat, or corrosive environments without proper certification.