S-91120A311 2.2 mm ID x 4.5 mm OD DIN 6798 External-Tooth Lock Washers
External-Tooth Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with external teeth that bite into mating surfaces, preventing loosening under dynamic loads.
- Excellent corrosion resistance from 18-8 stainless steel construction, ideal for harsh or humid industrial environments.
- Precise dimensional fit for M2 screws with 2.2mm ID and 4.5mm OD, ensuring easy installation and reliable performance.
- DIN 6798 compliance guarantees standardized quality, interchangeability, and consistent locking force.
- Environmental regulation adherence with RoHS 3 and REACH compliance, meeting global safety and sustainability standards.
- Durable, thin-profile design (0.2-0.4mm thickness) saves space without compromising locking effectiveness.
- External tooth configuration provides maximum grip on the bearing surface, enhancing joint security.
Professional Applications & Engineering Value
This M2 metric external tooth lock washer is engineered to solve critical fastening challenges in precision assemblies. Made from 18-8 stainless steel, it resists rust and chemical exposure, making it suitable for electronics, automotive controls, and medical devices where reliability is paramount. The external tooth design and compliance with DIN 6798 ensure that the washer maintains clamp load under vibration, reducing maintenance needs and preventing equipment failure. Its thin thickness range (0.2-0.4mm) allows use in compact spaces, while the RoHS and REACH compliance supports use in regulated industries, providing long-term, secure locking without environmental concerns.
Specification Summary & Compliance
This washer features precise dimensions: 2.2mm ID, 4.5mm OD, and 0.2-0.4mm thickness, designed for M2 screw sizes. It conforms to DIN 6798 for dimensional and performance standards, ensuring high-quality manufacturing. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (as of 06/14/2023, 235 SVHC), meeting international environmental and safety regulations for industrial use.
