S-90313A312 1.062" ID x 3.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Exceptional load distribution with a large 3.5" outer diameter, preventing surface damage and maintaining joint integrity
• Precision fit for 1" screws with 1.062" inner diameter, ensuring secure fastening and reducing installation errors
• Heavy-duty thickness ranging from 0.365" to 0.397", providing enhanced durability under high-pressure applications
• Full regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Corrosion-resistant performance without additional coatings, maintaining functionality in wet or chemical-exposed settings
• Dimensional stability in inch system measurements, ensuring compatibility with standard industrial equipment and replacement parts

Professional Applications & Engineering Value

This heavy-duty flat washer delivers critical engineering value through its 18-8 stainless steel composition, which provides inherent corrosion resistance without requiring surface treatments. The substantial 3.5" outer diameter creates an optimal bearing surface that distributes clamping force effectively, preventing material deformation in structural applications. Designed specifically for 1" screw size applications, this industrial washer maintains precise 1.062" inner diameter tolerances to ensure proper seating and vibration resistance in mechanical assemblies. Its robust 0.365-0.397" thickness withstands extreme compression forces in heavy machinery, construction equipment, and marine applications where corrosion-resistant washers are essential for long-term performance.

Specification Summary & Compliance

This flat washer features inch system dimensions with 1.062" inner diameter and 3.5" outer diameter, manufactured from 18-8 stainless steel for consistent performance. The product maintains dimensional accuracy suitable for industrial 1" screw applications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial use.