S-90107A031 0.406" ID x 0.875" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in harsh environments including marine and chemical processing applications
• Precise dimensional fit with 0.406" ID specifically engineered for optimal performance with 3/8" screw sizes
• Enhanced load distribution through 0.875" OD design that minimizes surface pressure and prevents material damage
• Consistent thickness control between 0.043-0.057" ensures reliable performance and uniform clamping force
• Maximum environmental compliance with RoHS 3 and REACH regulations for global industrial applications
• Exceptional chemical resistance from 316 stainless steel composition, ideal for acidic and chloride-exposed environments
• Durable inch-system construction that maintains dimensional stability under varying temperature and pressure conditions

Professional Applications & Engineering Value

These 316 stainless steel flat washers deliver critical engineering solutions where standard fasteners fail. The marine-grade composition provides exceptional resistance to saltwater corrosion, making them ideal for offshore platforms, shipbuilding, and coastal infrastructure. In chemical processing plants, the superior chemical resistance prevents degradation from acids, alkalis, and industrial solvents. The precise 0.406" inner diameter ensures perfect alignment with 3/8" screw sizes, eliminating installation issues and maintaining consistent clamping force. The optimized 0.875" outer diameter distributes load effectively across surfaces, preventing embedment in soft materials and protecting expensive components from damage. These industrial flat washers solve common failure points in demanding applications where corrosion, chemical exposure, and precise dimensional requirements are critical concerns.

Specification Summary & Compliance

This flat washer features inch-system dimensions with 0.406" inner diameter, 0.875" outer diameter, and controlled thickness between 0.043-0.057" for consistent performance. Manufactured to standard industrial specifications for 3/8" screw applications, these washers maintain dimensional accuracy across production batches. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, including the latest SVHC requirements as of June 14, 2023. The 316 stainless steel construction ensures reliable performance without hardness rating requirements, making these washers suitable for global industrial applications requiring certified material compliance.