German SCHNORR isdisc spring washersan internationally advanced solution provider in the field of screw locking devices, representing the crown jewel of German manufacturing. SCHNORR maintains a global network of branches. In addition to long-standing experience in stamping and turning, SCHNORR offers precision blanking technology, manufacturing expertise for precision disc springs, and other product groups such as wave springs. Beyond disc springs and screw and bolt locking devices, SCHNORR’s capabilities extend to the growing market for stamped and fine-blanked parts for industrial companies across various sectors, including automotive, engineering, aerospace, and energy utilities. This positions SCHNORR as a development partner and places it among the globally advanced leaders in its field of competence. At the core of SCHNORR are high-level development capabilities, reliability, cost-effectiveness, and advanced processes. Furthermore, to meet increasing customer demands for precision and reliability, the importance of engineering capabilities is growing. As a premium development partner for key customers, the added value created by SCHNORR for its products and services provides additional benefits in terms of safety, quality, and cost-effectiveness in all applications using SCHNORR products. Being an excellent employee requires effort in skills and competencies to ensure successful development. This applies not only to the optimization of technical equipment and SCHNORR processes but also to employee qualifications and other skills. The foundation for continuous growth is the commitment, knowledge, and enthusiasm of employees, which is highly appreciated by customers worldwide. SCHNOR easily meets all automotive standards and is certified according to ISO / TS 16949: 2009.

  SCHNORR disc spring washers typically support many dynamic processes in a clever, safe, and efficient manner under extreme force and load conditions. Due to the need to develop and manufacture suitable assembly solutions for various applications, SCHNORR® offers a wide range of standard disc spring washers. SCHNORR disc spring washers feature the following characteristics: optional linear, progressive, or degressive load-deflection curves; long service life under dynamic loads; use of high-quality materials; and precise compliance with force and dimensional requirements.SCHNORRWarehouse capacity: 1.100 tons of raw materials, 400 Euro pallet positions for finished goods, 3600 storage box positions for finished goods, 160 compact storage positions for finished goods. The dispatch location in Sindelfingen is certified as a "Known Consignor for Air Cargo," with approval number: DE / KC / 00667-01 / 1217. 2018 turnover: 47.000.000.-€, export ratio: approx. 48%.SCHNORR disc spring washersAdvantages: High vibration resistance due to reliable locking via serrations. Concentric force transmission and uniform axial load eliminate bending moments and deformation of the bolt shank. The serration design prevents friction and damage to components during tightening. Extremely high security against loss of preload and loosening. Wide variety of materials and finishes. The closed-loop form results in high pre-tension while avoiding the burst-open effect. The washers are developed and designed based on screw geometry, tightening torque, and construction conditions. Also suitable for through-holes (requiring safety washers on both sides). Suitable for elongated holes (using VS type). The locking effect is equivalent to that of wedge-locking washers. All specifications apply to original SCHNORR® safety washers "S" and "VS" made from C60S (1.1211) and are non-binding approximations. The Junker test is a well-known method for determining the point of preload loss in bolted connections. It compares the locking properties of dynamically strained bolted connections under vibration. The bolted connection is mounted on a test bench and subjected to simulated lateral vibrations with defined frequency and amplitude. The reduction in preload (FV) is measured via force sensors. The vibration test results comply with DIN 65151. Conclusion: Connections secured with original SCHNORR® safety washers maintain their preload after 2.000 cycles, clearly demonstrating their superior locking performance. Compared to split lock washers, locking washers, toothed washers, and spring washers (according to DIN 137 B), original SCHNORR® safety washers show sustained cycle counts and residual clamping force after 2,000 cycles. The test indicates that original SCHNORR® safety washers have an equivalent locking effect compared to wedge-locking washers.

  In 1908, Adolf Adolf Schnorr, aged only 25, established a small workshop in Altbach (Altbach), near Esslingen south of Stuttgart. He quickly built up an initially small customer base that appreciated his meticulously crafted precision tools. This development came to an abrupt halt with the outbreak of World War I. Adolf Adolf Schnorr became a soldier and had to rent out his workshop.After returning from military service following World War I, Adolf Adolf Schnorr sold the shop in Altbach (Altbach) and used the proceeds to purchase a workshop in Botnang (Botnang), near Stuttgart. Adolf Adolf Schnorr then began increasingly using disc springs as precision tools. 

  In 1933, Adolf Adolf Schnorr celebrated the 25th anniversary of the company's founding.Due to strong market demand, Adolf Schnorr began mass production of disc spring washers. Demand forSchnorr disc spring washersbecame so strong that he decided to stop manufacturing tools to concentrate production on disc springs.

  In 1951, Adolf Adolf Schnorr passed away at the age of 68. Due to strong growth, the property in Botnang had reached maximum capacity. New factory buildings and associated office spaces were required. A new site was built in Sindelfingen-Maichingen, and the company moved there in 1956.

  In the early 1960s, Schnorrs developed its own original SCHNORR safety washers, which began their success story as a more effective product compared to traditional locking devices for bolted connections.

  In 1995, Hugo Bauer Nachf. Hugo Bauer Nachf GmbH became a member of the SCHNORR® Group. Through cooperation within the SCHNORR Group, the market positions of both companies were strengthened, creating synergies. An increasing number of new products, such as special springs or stamped parts made from spring steel, were developed and manufactured, particularly for the automotive industry.

  In 2011, HUGO BAUER NACHF GmbH and Adolf Adolf Schnorr GmbH & Co. KG finally merged into a single enterprise, becoming SCHNORR GmbH. This generated further synergies and strengthened their joint market position. In 2013, the automotive and industrial sales departments restructured their focus. Since then, SCHNORR GmbH has developed and manufactured deep-drawn parts for the automotive industry. Another goal of the new structure was to focus on key competencies in the fields of disc spring washers and stamped spring parts.

  In 2011, construction began on the first phase in Maichingen to update buildings and expand capacity. The second phase (new production hall) began in 2015. The new production hall became operational in 2016. One year later, the company moved into a new, modern administrative building.