S-90126A009 0.188" ID x 0.438" OD ASME B18.21.1 SAE Washers
SAE 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 zinc-plated steel construction for extended service life in demanding environments
- Precise dimensional fit with 0.188" ID and 0.438" OD ensuring perfect compatibility with No. 8 screws
- Enhanced load distribution through optimized surface area contact, preventing surface damage and loosening
- Industry-standard compliance with ASME B18.21.1 specifications for reliable performance in mechanical assemblies
- Environmental responsibility with full RoHS 3 and REACH compliance for safe use across global markets
- Consistent thickness control (0.036-0.065") for uniform pressure distribution and vibration resistance
- Versatile industrial application across machinery, equipment, and structural assemblies requiring inch-system fasteners
Professional Applications & Engineering Value
This SAE flat washer delivers exceptional engineering value through its zinc-plated steel construction, providing critical corrosion resistance in humid or chemically aggressive environments. The precisely controlled dimensions (0.188" ID × 0.438" OD) ensure perfect alignment with No. 8 screw applications, distributing clamp load effectively to prevent joint failure. Manufacturers benefit from the washer's ability to protect sensitive surfaces from galling and indentation while maintaining ASME B18.21.1 compliance for consistent quality in automotive, industrial machinery, and structural fastening systems. The optimized thickness range (0.036-0.065") accommodates varying torque requirements without compromising the integrity of assembled components.
Specification Summary & Compliance
This flat washer maintains dimensional accuracy per ASME B18.21.1 standards with inner diameter of 0.188", outer diameter of 0.438", and thickness ranging 0.036-0.065". Manufactured from zinc-plated steel for No. 8 screw applications, the product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring unrestricted use in international industrial markets.
