Alcoa Fastening Systems & Rings introduces stainless steel Magna-Lok® blind fastening system

December 8, 2015

Telford, UK 08 December, 2015 – Alcoa Fastening Systems & Rings (AFSR), Telford Industrial Fasteners Operations, announces the launch of its new Huck® Magna-Lok® 316 A4 stainless steel structural blind fastener.

Retaining all the features of the standard version of the Magna-Lok structural blind fastener; including a wide grip range to accommodate large variations in joint thickness, 360 internal locking technology enabling the pin to be mechanically locked to the sleeve, expansion during installation for excellent joint tightness and high-quality resistance to liquid penetration; the 316 A4 stainless steel Magna-Lok fastener also offers corrosion resistance beyond anything else in the Huck blind fastener range.

Known as ‘marine grade’ due to its preferred use in the construction of boats, ships, oil and gas rigs, and off-shore wind farm towers, 316 is an austenite stainless steel which contains 18 percent chromium and 12 percent nickel. Steel is considered stainless when its chromium content is at a minimum of 10.5 per cent. Therefore, a higher content will result in an enhanced corrosion resistance. Unreactive chromium III oxide can form on a component’s surface, protecting the metal beneath from the environment. Nickel further increases the corrosion resistance of the resultant alloy.

Andrew Smith, engineering manager at AFSR, said: “Magna-Lok is the most popular and versatile of our structural blind fasteners. Combined with the demand from our customers for a high-performance corrosion-resistant fastener, it was the obvious choice on which to develop a 316 stainless steel version. In addition to offshore applications, we are also looking at its use in food processing machinery, heat exchangers, chemical storage facilities and medical equipment.”

More information about the Magna-Lok A4 316 fastener is available to view and download from:


1 The new 316 A4 stainless steel Huck Magna-Lok fastener.

AFSR 316 A4 stainless steel Huck Magna-Lok 1

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2 The new 316 A4 stainless steel Huck Magna-Lok fastener – cross section in situ.

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About Alcoa Fastening Systems & Rings
Alcoa Fastening Systems & Rings, a business unit of Alcoa, is a leading worldwide designer and manufacturer of fastening systems and rings, including specialty fasteners, fluid fittings, assembly components, installation systems, and seamless rings for aerospace and industrial applications. Headquartered in Torrance, California, the company has over 8,300 employees at 39 manufacturing and distribution/logistics locations in 13 countries. For more information, visit

Among the products offered by the AFSR industrial division are the internationally successful brands Huck-Spin®, Camloc®, Recoil®, Keensert®, Simmonds® and SNEP®. The Huck fastening elements from AFSR are used among others in private cars, trailers, commercial vehicle construction and railway carriages. The heavy-duty systems were designed to solve problems due to extreme tension and vibration between joined materials. They provide high stability and facilitate more lightweight, stronger and more durable structures. The Huck family includes small and large diameter lockbolts, medium and heavy-duty blind rivets and accompanying installation tooling. The product range based on Lou Huck’s original drawing of the first lockbolt made 50 years ago, and now known worldwide as a HuckBolt®, has been continually improved.

About Alcoa
A global leader in lightweight metals technology, engineering and manufacturing, Alcoa innovates multi-material solutions that advance our world. Our technologies enhance transportation, from automotive and commercial transport to air and space travel, and improve industrial and consumer electronics products. We enable smart buildings, sustainable food and beverage packaging, high-performance defence vehicles across air, land and sea, deeper oil and gas drilling and more efficient power generation. We pioneered the aluminum industry over 125 years ago, and today, our approximately 59,000 people in 30 countries deliver value-add products made of titanium, nickel and aluminum, and produce best-in-class bauxite, alumina and primary aluminum products. For more information, visit, follow @Alcoa on Twitter at and follow on Facebook at

For more information Alcoa Fastening Systems & Rings, contact:
Jay Sahadew, marketing manager
Tel: +44 1952 204607