G80 Welded Master Link Assembly A347 – Engineered Strength for Critical Lifting Systems
The G80 Welded Master Link Assembly A347 is a high-integrity, heavy-duty connector designed for demanding overhead lifting and rigging applications. Built to meet the rigorous requirements of Grade 80 chain sling systems, this assembly serves as the central hub in single-leg, 3-leg, or 4-leg chain sling configurations—ensuring balanced load distribution, structural reliability, and full compliance with international safety standards.
Key Specifications:
- Material: High-tensile alloy steel, engineered for maximum strength and fatigue resistance.
- Processing: Precision forged, then quenched and tempered to achieve optimal mechanical properties and toughness.
- Proof Load: Tested at 2 times the Working Load Limit (WLL) to verify structural integrity.
- Ultimate Breaking Load: Rated at 4 times the WLL, providing a 4:1 safety factor in accordance with ASME B30.9 and OSHA regulations.
- Finish: Durable red or yellow powder coating for high visibility, corrosion resistance, and easy identification in the field.
- Compliance: Meets ASTM A342/A342M standards (A347 configuration) for welded master links in Grade 80 systems.
Primary Applications:
- Central connection point in Grade 80 (G80/G8) chain slings
- Multi-leg lifting assemblies (3- or 4-leg configurations) for industrial machinery, structural steel, and heavy equipment
- Transport securement and recovery operations requiring certified, traceable hardware
- Use in construction, oil & gas, mining, and manufacturing environments
Safety & Traceability:
Each G80 Welded Master Link Assembly A347 is permanently marked with:
- Working Load Limit (WLL)
- Grade marking (“80”)
- Manufacturer ID
- Heat number (for full traceability)
⚠️ Important: Use only with Grade 80 chains and fittings. Never exceed the rated WLL. Inspect regularly for cracks, deformation, or coating damage. Retire immediately if compromised.
When safety, strength, and compliance are non-negotiable—trust the G80 Welded Master Link Assembly A347 to hold your load with confidence.
| G80 Chain | 3 or 4 Leg WLL | Wire Rope WLL | Weight | A | B | D | a | b | d | s |
| in | ton | ton | kg | mm | mm | mm | mm | mm | mm | mm |
| 7/32 | 2.36 | 2.4 | 0.82 | 100 | 60 | 14 | 85 | 40 | 12 | 6 |
| 1/4 | 3.15 | 3.2 | 1.6 | 160 | 90 | 18 | 100 | 60 | 14 | 7.6 |
| 1/4 | 3.15 | 3.2 | 1.61 | 160 | 90 | 18 | 100 | 60 | 14 | 7.6 |
| 5/16 | 4.25 | 4.2 | 1.95 | 160 | 90 | 20 | 100 | 60 | 14 | 7.6 |
| 3/8 | 6.7 | 8 | 3.16 | 180 | 100 | 22 | 150 | 70 | 18 | 8.4 |
| 1/2 | 11.2 | 12 | 6.75 | 270 | 140 | 28 | 160 | 90 | 22 | 13.5 |
| 5/8 | 17 | 17 | 9.31 | 270 | 140 | 32 | 180 | 100 | 25 | 16.5 |
| 3/4 | 23.6 | 25 | 18.4 | 300 | 160 | 40 | 270 | 140 | 31 | 19 |
| 7/8 | 31.5 | 31.5 | 26.4 | 340 | 180 | 45 | 285 | 155 | 36 | 22 |
| 1 | 45 | 45 | 42.91 | 350 | 190 | 51 | 340 | 180 | 45 | 25 |
G80 Welded Master Link Assembly A347 are a high quality piece of lifting gear. It is designed to meet specific working load limits (WLL) and safety factors. It is important to use the correct master link assembly for a given load and application.
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