S-90231A131 1.5" ID x 2.75" OD SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass material, ideal for humid or chemically aggressive environments
• Precise dimensional fit with 1.5" ID and 2.75" OD ensures secure seating for 1 3/8" screws
• SAE standard compliance guarantees interchangeability and reliability in inch-system applications
• Excellent load distribution across 0.136-0.213" thickness range prevents surface damage
• REACH regulatory compliance ensures safe use in industrial settings with restricted substances
• Non-magnetic properties make it suitable for electrical and sensitive equipment applications
• Durable brass construction maintains integrity under repeated assembly and disassembly

Professional Applications & Engineering Value

This brass SAE flat washer delivers critical engineering solutions where corrosion resistance and dimensional precision are paramount. The 1.5" ID x 2.75" OD configuration provides optimal bearing surface for 1 3/8" screw size applications, preventing fastener loosening and material deformation in high-vibration environments. Manufactured from durable brass material, it effectively resists galvanic corrosion when paired with dissimilar metals, making it ideal for marine, plumbing, and electrical enclosures. The SAE standard ensures seamless integration with existing inch-system components, while the REACH compliant composition addresses environmental regulations without compromising performance in industrial maintenance and OEM assembly operations.

Specification Summary & Compliance

This SAE flat washer features precise inch-system dimensions with 1.5" inner diameter, 2.75" outer diameter, and thickness ranging 0.136-0.213" to accommodate standard 1 3/8" screw size applications. Manufactured to SAE standards for dimensional consistency and manufactured from brass material for corrosion resistance. Compliant with REACH (EC 1907/2006) regulations regarding substance restrictions (06/14/2023, 235 SVHC) for industrial use.