Qingdao Haosail Machinery Co., Ltd.

Master links play a critical role in lifting and rigging systems, serving as the main connection point between slings and lifting equipment. Among the most commonly used types are the A342 Forged Alloy Master Link and the A343 European Type Master Link with Flat. While they may look similar, their design, manufacturing process, and load criteria differ significantly.

The A342 Master Link is fully forged across all sizes, ensuring consistent strength and structural integrity. For chain sling applications, it offers a safety factor of 4:1, while for steel wire rope slings, the safety factor increases to 5:1.

This makes the A342 an ideal choice for applications where higher safety margins are required, especially in wire rope assemblies.

The A343 European Type Master Link with Flat is designed to meet European lifting standards. Smaller sizes are forged, while larger sizes are welded. Its flat section improves contact with hooks and shackles, making it especially suitable for multi-leg chain slings. The Working Load Limit of A343 is based on lifting angles from 0° to 45°, reflecting real-world European lifting conditions.

In summary, A342 is best suited for applications requiring fully forged construction and higher safety factors, while A343 is the preferred option for European-style chain slings and angle-dependent lifting systems. Understanding these differences ensures safer and more efficient lifting operations.

About us：

As a professional manufacturer and supplier of lifting and rigging hardware, Qingdao Haosail Machinery Co., Ltd. specializes in the production and supply of A342 Forged Alloy Master Links and A343 European Type Master Links with Flat.

All products are supplied in accordance with international lifting requirements and are suitable for chain slings and wire rope sling assemblies used in construction, offshore, industrial lifting, and heavy-duty applications.

With flexible production capacity and strict quality control, we are able to support OEM and ODM requirements, customized markings, surface finishes, and packaging solutions. Our A342 and A343 master links are widely exported and trusted by customers worldwide for their safety, durability, and stable quality.