S-92538A127 0.125" ID x 0.438" OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise flush mounting ensured by the 82° countersink angle, eliminating protrusions for a smooth, professional finish.
• Enhanced load distribution from the 0.438" OD, reducing surface stress and preventing material damage.
• Secure fit for No. 4 screws with a 0.125" ID, minimizing loosening and maintaining assembly integrity under vibration.
• Consistent mechanical performance due to Rockwell B83 hardness, providing dependable strength and wear resistance.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility in industrial applications.
• Durable thickness range of 0.084-0.104", offering stability and resilience in demanding fastening scenarios.

Professional Applications & Engineering Value

This 82° countersunk washer is engineered to address common challenges in precision assemblies requiring flush mounting. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for applications in electronics, aerospace, and marine industries where exposure to moisture and chemicals is a concern. The precise countersink angle ensures that flat head screws sit perfectly flush, reducing aerodynamic drag, improving aesthetics, and preventing snagging in moving parts. With a Rockwell B83 hardness, it maintains dimensional stability under load, while the inch-based sizing (e.g., 0.125" ID and 0.438" OD) guarantees compatibility with No. 4 screws, streamlining inventory and assembly processes for B2B clients.

Specification Summary & Compliance

This washer features an internal diameter of 0.125", outer diameter of 0.438", and thickness ranging from 0.084" to 0.104", designed for use with No. 4 screws and an 82° countersink angle. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B83, ensuring consistent performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, affirming its adherence to environmental and safety regulations for industrial use.