S-90231A135 0.125" ID x 0.312" OD 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 nickel-plated brass construction, ideal for harsh industrial environments
- Precise dimensional fit with 0.125" ID and 0.312" OD ensures secure seating for No. 4 screws
- Consistent load distribution across 0.025-0.040" thickness range, minimizing surface damage
- SAE standard compliance guarantees interchangeability and reliable performance in inch-based systems
- REACH regulatory compliance ensures safe handling and environmental responsibility
- Excellent electrical conductivity of brass material supports grounding and EMI/RFI shielding applications
- Durable nickel plating provides long-lasting protection against wear and oxidation
Professional Applications & Engineering Value
These nickel plated brass SAE flat washers deliver critical engineering value in applications where corrosion resistance and electrical conductivity are paramount. The brass core material combined with nickel plating creates a robust barrier against moisture, chemicals, and atmospheric elements, significantly extending service life in demanding environments. Precision-engineered to SAE standards with exacting 0.125" ID and 0.312" OD dimensions, these washers provide reliable bearing surfaces for No. 4 screw applications in electrical enclosures, instrumentation, marine hardware, and precision machinery. The consistent 0.025-0.040" thickness ensures uniform pressure distribution while preventing fastener loosening and material deformation under vibration or thermal cycling conditions.
Specification Summary & Compliance
This SAE flat washer features inch system dimensions with 0.125" inner diameter, 0.312" outer diameter, and 0.025-0.040" thickness range, specifically engineered for No. 4 screw size applications. Manufactured to SAE standards for dimensional accuracy and performance consistency. The product is fully REACH compliant (EC 1907/2006) as of June 14, 2023, meeting all requirements for 235 SVHC substances, ensuring regulatory compliance for industrial and commercial use across global markets.
