S-92917A135 0.2" ID x 0.438" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from nickel-plated brass construction, extending service life in humid or chemically aggressive environments.
• Excellent load distribution with precise 0.438" outer diameter, preventing surface damage and maintaining joint integrity under pressure.
• Reliable hardness performance at Rockwell B60, ensuring the washer maintains shape and function without deformation under repeated use.
• Perfect fit for No. 10 screws with 0.2" inner diameter, providing secure fastening and reducing installation errors.
• Consistent dimensional accuracy with thickness ranging 0.029-0.043", guaranteeing uniform performance in assembly lines.
• Compliance with global environmental standards including RoHS 3 and REACH, making them safe for regulated industries and export markets.
• Durable material combination offering both the conductivity of brass and the protective qualities of nickel plating for versatile applications.

Professional Applications & Engineering Value

This nickel-plated brass flat washer is engineered to address common industrial challenges such as galvanic corrosion, electrical conductivity requirements, and consistent load-bearing performance. The brass core provides inherent corrosion resistance and excellent electrical properties, while the nickel plating adds an extra layer of protection against oxidation and chemical exposure. Ideal for electrical enclosures, marine equipment, and precision instrumentation, these washers prevent fastener loosening caused by vibration and thermal cycling. The specific sizing for No. 10 screw applications ensures perfect compatibility in assembly processes, reducing the risk of mismatched components and improving overall fastening reliability in critical operations.

Specification Summary & Compliance

Manufactured to inch system standards with inner diameter of 0.2" and outer diameter of 0.438", this flat washer maintains precise dimensional tolerances for consistent performance. The thickness range of 0.029-0.043" ensures proper fit and function across various applications. The washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to stringent environmental and safety standards for industrial components.