S-91525A425 2.125" ID x 4.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life
• Optimal load distribution from the large 4.25" outer diameter, minimizing surface pressure and preventing material damage
• Precise fit for 2" screws with a 2.125" inner diameter, ensuring secure fastening and reducing installation errors
• Enhanced durability with a substantial thickness range (0.150-0.220"), providing reliable performance under heavy loads
• Compliance with strict regulations, meeting RoHS 3 and REACH standards for safe, environmentally responsible industrial use
• Versatile inch system compatibility, designed for seamless integration with standard imperial fastener assemblies
• Long-term cost efficiency due to the material's resistance to rust and degradation, lowering maintenance and replacement frequency

Professional Applications & Engineering Value

This 316 stainless steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and uneven load distribution. Its high-grade material excels in demanding settings like marine, chemical processing, and outdoor infrastructure, where exposure to moisture and chemicals is frequent. The precise 2.125" ID and 4.25" OD ensure a perfect match for 2" screw size applications, providing a stable base that reduces stress concentration on connected surfaces. By utilizing this heavy-duty flat washer, engineers can enhance assembly integrity, prevent loosening from vibration, and extend the lifespan of critical equipment, making it a reliable choice for industrial washers in corrosive environments.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 2.125", outer diameter of 4.25", and thickness ranging from 0.150" to 0.220". It is manufactured to standard specifications for compatibility with 2" screw sizes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety standards for industrial hardware.