S-91106A121 2.8 mm ID x 5.5 mm OD DIN 6797 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal tooth design that bites into mating surfaces, preventing loosening under dynamic loads.
• Enhanced durability and corrosion resistance from black-oxide steel construction, ideal for harsh industrial environments.
• Precise fit and reliable performance with a 2.8 mm inner diameter and 5.5 mm outer diameter, ensuring compatibility with M2.6 screws.
• Consistent mechanical strength backed by Rockwell C35 hardness, maintaining tooth integrity and locking force over repeated use.
• Guaranteed dimensional accuracy and interchangeability through strict adherence to DIN 6797 standards.
• Safe for global supply chains with full compliance to RoHS 3 and REACH regulations, free from hazardous substances.
• Optimal space utilization with a slim 0.3-0.5 mm thickness, suitable for compact assemblies without compromising function.

Professional Applications & Engineering Value

This M2.6 metric tooth lock washer is engineered to address critical vibration-induced failures in precision assemblies. The black-oxide steel material offers excellent wear resistance and a protective layer against oxidation, extending service life in demanding conditions like automotive electronics, robotics, and small machinery. Its internal tooth location ensures maximum grip on the screw head or bearing surface, distributing load evenly to prevent back-off. By conforming to DIN 6797, it guarantees dimensional stability and reliable performance in metric-based designs, reducing maintenance needs and enhancing overall assembly integrity for industrial applications.

Specification Summary & Compliance

This washer meets DIN 6797 specifications for tooth lock washers, with precise dimensions: Inner Diameter (ID) of 2.8 mm, Outer Diameter (OD) of 5.5 mm, and Thickness ranging 0.3-0.5 mm. It is manufactured from black-oxide steel with a hardness of Rockwell C35, ensuring consistent locking performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.