S-98689A243 2 mm ID x 4 mm OD General Purpose Washers
General Purpose Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
- Precise dimensional fit with 2mm ID and 4mm OD ensuring perfect alignment with M1.8 screws
- Ultra-thin profile (0.2-0.4mm thickness) for space-constrained assemblies without compromising load distribution
- Full regulatory compliance with RoHS 3 and REACH standards for safe use in global markets
- Excellent surface protection preventing galling and thread damage in precision metric fastening systems
- Metric system compatibility ensuring seamless integration with international engineering specifications
- Long-term reliability maintaining performance in demanding industrial applications
Professional Applications & Engineering Value
These precision M1.8 flat washers manufactured from 18-8 stainless steel address critical challenges in miniature assembly systems where corrosion resistance and dimensional accuracy are paramount. The metric flat washer design with 2mm internal diameter and 4mm outer diameter provides optimal bearing surface for M1.8 screws, preventing surface damage while distributing clamping forces evenly across delicate components. Particularly valuable in electronics, medical devices, and precision instrumentation, these corrosion resistant washers maintain integrity in environments exposed to moisture, chemicals, or temperature variations. The ultra-thin 0.2-0.4mm profile enables use in compact designs where space optimization is critical, while the stainless steel construction ensures consistent performance without degradation over time.
Specification Summary & Compliance
This metric flat washer features precise dimensions of 2mm ID × 4mm OD × 0.2-0.4mm thickness, engineered for M1.8 screw applications. Manufactured from 18-8 stainless steel, the washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they contain no restricted substances above permitted thresholds. The flat washer design follows standard metric system specifications for reliable performance in industrial fastening systems.
