S-90377A124 0.203" ID x 0.688" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel, ideal for harsh industrial environments and outdoor applications.
• Enhanced load distribution due to precise 0.688" OD and 0.203" ID, reducing surface pressure and preventing joint loosening.
• Excellent durability from Rockwell B68 hardness, ensuring long-term performance under mechanical stress and vibration.
• Reliable fit for No. 10 screws, providing secure fastening and minimizing assembly errors in critical applications.
• Consistent thickness tolerance (0.030-0.050") for uniform spacing and stable connections in repetitive installations.
• Compliance with RoHS 3 and REACH regulations, guaranteeing safety and environmental standards for global industrial use.
• Versatile inch-system compatibility, seamlessly integrating with existing equipment and standard fastener systems.

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel flat washer is engineered to address common industrial challenges like corrosion, vibration-induced failures, and inconsistent load distribution. The 18-8 stainless steel base material, combined with a black-oxide finish, provides exceptional resistance to moisture, chemicals, and oxidation, making it suitable for demanding sectors such as automotive assembly, marine equipment, and outdoor machinery. Its precise 0.203" ID ensures a snug fit on No. 10 screws, preventing misalignment and enhancing fastener integrity in high-stress applications. By offering reliable performance in corrosive or high-vibration environments, this washer reduces maintenance costs and extends the lifespan of connected components, delivering consistent value in industrial fastening solutions.

Specification Summary & Compliance

This flat washer adheres to standard inch measurement specifications, with an inner diameter of 0.203", outer diameter of 0.688", and thickness ranging from 0.030" to 0.050". It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B68, ensuring dimensional accuracy and mechanical reliability. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial markets.