William Hackett HA Grade 8 Zinc Tough Master Links With Handles

Designed specifically for lifting and lowering lifeboats, William Hackett’s HA Master Links with Handles come in a wide range of safe working loads from 7 tonnes right up to 26 tonnes.

Manufactured from triple alloy steel, in accordance with EN1677, each unit is individually proof tested to 2.5 times the stated working load limit, ensuring maximum durability and performance.

Suitable for operating environments with temperatures from -40° C to + 200°C, they have a primary coating of signature Zinc Tough corrosion protection, before a secondary application of orange powder coating.

Integrated with Zinc-Tough ^TM  technology, these Master Links have been specifically designed to provide superior protection from hydrogen embrittlement and stress corrosion cracking – two key elements when operating in rigorous offshore environments.

If you didn’t know, Hydrogen Embrittlement is the process by which metals like steel become brittle and fracture easily under stress due to the introduction of subsequent diffusion of hydrogen into the metal. Also known as ‘Hydrogen Assisted Stress Cracking’, this process is particular common in offshore applications where corrosion poses a serious threat.

Combining their knowledge, Hackett’s and McKinnon Chain have introduced the Zinc Tough technology, infuses these masterlinks with the tensile strength to deliver a 5:1 safety factor with a hardness value of as low as 34-36 HRC.