Description
Product Overview
The 5/8 inch Grade 100 Master Link Lifting Ring from Rigging is a precision‑engineered rigging attachment designed for high‑stress lifting and pulling applications. Forged from premium 8620 alloy steel, the ring delivers a working load limit of 8,600 lb and a maximum break capacity of 34,400 lb, meeting Grade 100 specifications for superior safety and performance. Its compact 5/8 inch diameter provides a versatile fit for a wide range of hoist hooks, shackles, and eye bolts, while the smooth, rounded edges reduce wear on rope and cable. The product’s robust construction, combined with a polished surface finish, ensures reliable operation in harsh industrial environments, from construction sites to shipyards.
![[Product front view showing all components]](https://www.qanex.store/wp-content/uploads/2026/08/efdb10a8108c4ffcaf73b57808c3d1cb.jpg)
Detailed Specifications
Material: Forged 8620 alloy steel, heat‑treated for optimal tensile strength.
Working Load Limit (WLL): 8,600 lb (3,900 kg).
Maximum Break Capacity: 34,400 lb (15,600 kg).
Diameter: 5/8 inch (15.9 mm).
Weight: 1.17 lb (0.53 kg).
Finish: Corrosion‑resistant black phosphate coating.
Compliance: Meets ASTM A307 and ASME B30.26 standards for hoist rings.
Usage
This master link is ideal for a variety of heavy‑duty rigging scenarios. Use it to connect crane hooks to load chains, secure lifting slings in construction projects, or attach winches for marine towing operations. Its Grade 100 rating makes it suitable for repetitive use in environments where safety margins are critical, such as steel fabrication yards, oil‑field equipment handling, and large‑scale material transport. The ring’s compact size allows it to fit into confined spaces, while its high load capacity ensures it can handle the most demanding lifts without deformation.
Why Choose Us
Rigging has a long history of delivering reliable, high‑quality lifting components, and this master link exemplifies that commitment. Each ring undergoes a rigorous quality‑control process, including dimensional inspection, tensile testing, and surface finish verification, to guarantee consistent performance. Our dedicated engineering team continuously refines the forging and heat‑treatment processes, resulting in a product that exceeds industry standards for strength and durability. Additionally, we provide comprehensive technical support and a responsive after‑sales service team ready to assist with installation guidance, load calculations, and any warranty concerns.
Key Features
- High working load of 8,600 lb for demanding lifting tasks
- Grade 100 rating ensures a safety factor of four on the break capacity
- Forged 8620 alloy provides exceptional strength and wear resistance
- Compact 5/8 inch design fits a wide range of hooks and eye bolts
- Dedicated technical support and warranty service for peace of mind
FAQ
What is the difference between the working load limit and the break capacity?
The Working Load Limit (WLL) is the maximum load the ring can safely support during normal operation, set at 8,600 lb for this product. The break capacity is the load at which the ring will fail, measured at 34,400 lb, providing a safety factor of four times the WLL.
Can this master link be used with synthetic rope?
Yes, the smooth, rounded edges of the ring are designed to minimize abrasion on synthetic rope, wire rope, and chain, making it suitable for a variety of rigging materials.
Is the ring compatible with standard crane hooks?
The 5/8 inch diameter is a common size that fits most standard crane hooks, eye bolts, and shackles used in industrial lifting applications.
What maintenance is required to keep the ring in optimal condition?
Regular visual inspections for signs of wear, corrosion, or deformation are recommended. Keep the surface clean and apply a light lubricant if used in a high‑moisture environment to maintain the protective coating.
Do you offer bulk pricing for large orders?
Yes, we provide volume discounts and can work with you to meet project‑specific requirements. Contact our sales team for a customized quote and lead‑time information.
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