S-90785A029 0.265" ID x 0.688" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 400 Nickel material for extended service life in harsh environments
• Exceptional durability from Rockwell C45 hardness to withstand high-pressure industrial applications
• Precise dimensional fit with 0.265" ID and 0.688" OD ensuring reliable performance with 1/4" fasteners
• Environmental compliance meeting RoHS 3 and REACH standards for safe industrial use
• Consistent thickness control (0.047-0.052") for uniform load distribution and vibration resistance
• Heavy-duty construction suitable for demanding mechanical and structural applications
• Standard inch system compatibility for seamless integration with existing equipment and fasteners

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this 400 Nickel flat washer delivers exceptional performance where corrosion resistance and mechanical strength are critical. The nickel alloy composition provides superior protection against oxidation and chemical degradation, making it ideal for marine, chemical processing, and outdoor applications. With Rockwell C45 hardness, these precision washers maintain structural integrity under heavy loads and repeated stress cycles. The precise 0.265" ID and 0.688" OD dimensions ensure perfect fit with 1/4" fasteners, preventing loosening and distributing load evenly across mating surfaces. This combination of material properties and dimensional accuracy solves common engineering challenges including fastener corrosion, joint failure, and maintenance frequency in industrial washer applications.

Specification Summary & Compliance

This flat washer features precision inch-system dimensions with 0.265" internal diameter and 0.688" outer diameter, designed for 1/4" screw size applications. The washer maintains tight thickness tolerance between 0.047-0.052" for consistent performance. Manufactured from 400 Nickel material with Rockwell C45 hardness rating, it meets industry standards for mechanical properties and dimensional requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial use worldwide.