AGS & A Series

At Arnold Wragg, we’re not just manufacturers, we’re pioneers in the field of self-locking nuts, specifically the A Series and AGS Locking Nuts. Our capabilities stand out in this specialised area, and here’s why:

Precision Engineering for Complex Components

Manufacturing these components is a complex task, demanding in-depth knowledge, comprehensive resources, and advanced expertise. We’re committed to crafting these highly precise parts, adhering to stringent batch release tests that require external witnessing. Our process aligns with the strict standards demanding sealed route manufacturing, a criterion few can meet. At Arnold Wragg, we embody an AS9100 culture, ensuring every batch meets these exacting requirements.

Overcoming Technical Challenges

Our journey to excellence involved mastering extreme temperature tests, ranging from -75°C to 200°C, and accurately recording torque values across 36 tests encompassing six different types. To achieve consistent results, we designed and implemented a customised computerised torque measuring and recording system. This technology not only ensures precision but also enhances clarity by transforming test results into graphical outputs, a significant advancement over traditional single-figure records.

Exceeding Standards as a Norm

At Arnold Wragg, exceeding minimum test standards is our standard practice. Our philosophy revolves around seeking the best possible manufacturing methods, rather than settling for the bare minimum. This ethos is reflected in our expanding product range, with new additions being introduced monthly. For detailed information, our approval list is readily available.

A Glimpse into the History of Self-Locking Nuts

Originating in the British aircraft industry in the 1930s, self-locking nuts have evolved significantly. Initially overseen by the Royal Aircraft Establishment, the design and testing standards for these nuts have undergone numerous revisions and standardisations over the decades. From the first issue of AD114 in 1942 to the modern SBAC Technical Specification (TS120), these nuts have been integral to aircraft construction. Despite changes in design authority and quality assurance over the years, the commitment to maintaining high standards in the production of stiff nuts has remained steadfast.

Arnold Wragg isn’t just manufacturing self-locking nuts; we’re upholding a tradition of excellence and innovation in a field where precision and reliability are paramount.