+44 (0) 1491 827460
sales@interspares.com

Kaynar / Simmonds


Alcoa Fastening Systems’ legacy, since the 1930’s, has been that of a worldwide industry leader in the development of precision locknuts. Among its many firsts
are the all-metal lightweight selflocking nut and the K-FastTM system for high- speed installation. Alcoa Fastening Systems offers a variety of configurations and materials for virtually any application, in both unified and metric sizes. The parts are manufactured to the most rigorous standards and meet or exceed the requirements of military, industry and customer specifications such as MS, AS, BAC, DIN, EN, NAS, and NSA.


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Alcoa Fastening Systems’ legacy, since the 1930’s, has been that of a worldwide industry leader in the development of precision locknuts. Among its many firsts
are the all-metal lightweight selflocking nut and the K-FastTM system for high- speed installation. Alcoa Fastening Systems offers a variety of configurations and materials for virtually any application, in both unified and metric sizes. The parts are manufactured to the most rigorous standards and meet or exceed the requirements of military, industry and customer specifications such as MS, AS, BAC, DIN, EN, NAS, and NSA.