ABOUT ESNA

The ESNA story began in 1927, when a young engineer named Carl Arthur Swanstrom arrived in the United States from Sweden.  He brought with him a license to manufacture and sell a unique new self-locking fastener, which he called an "Elastic Stop Nut" because the nut remained "stopped" anywhere along the bolt threads.  A non-damaging insert, fitted into the top of the nut, gripped the bolt threads firmly, holding the nut in position without seating against the work or using secondary locking devices.

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When ESNA was founded, the market had very few "Special Needs", which allowed for a very small number of products required to meet customer needs.  Over the course of time, customers began requiring fasteners made from the highest quality materials and designed for their specific needs.

In the decades since, ESNA has grown its product offering to over 25,000 unique fasteners to provide customers with the quality, precision, and assurance that ESNA is known for.