Lockbolt Fastening Systems

The development of the first lockbolt fastener was pioneered in the mid 1940s. Since that revolutionary design, which greatly simplified the assembly of structure, Alcoa Fastening Systems & Rings has led the way with innovative designs that have been instrumental in improving structural integrity and reducing manufacturing costs around the world. Products are available in both unified and metric sizes. Installation tool systems are also offered.

The XPL® lockbolt is the latest addition to the Alcoa Fastening Systems & Rings lockbolt family. With a grip range that is more than twice that of other systems, each part number can be used in more than twice the applications. This means fewer part numbers to inventory. The wide selection of materials and diameters make the XPL® the most versatile lockbolt system ever.

The GP and LGP® TitaniumLGP® Aluminum lockbolt families improved on the NAS lockbolt family by optimizing the lock groove design. This optimization makes the GP and LGP lockbolt system significantly lighter than comparable threaded fastening systems.



NAS Lockbolt


Lockbolt Legacy Product Support

Titanium LHP™ Lockbolt

Viewing documents in PDF format requires Adobe Acrobat Reader, which is available as a free download from the Adobe Web site.

Related Documents
Process Manual [1281KB]

Contact Information
Americas & Asia/Pacific
Customer Support


Technical Support
+1 310 784 2652

Europe Customer / Technical Support
+49 8251 8757-0
+49 8251 1652