S-95395A215 0.281" ID x 0.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance due to brass material, ideal for humid or chemically aggressive environments
• Excellent load distribution with 0.5" outer diameter, preventing surface damage and loosening under vibration
• Precision fit for 1/4" screws with 0.281" inner diameter, ensuring secure fastening and reduced assembly time
• Enhanced durability from Rockwell B60 hardness, maintaining structural integrity under repeated stress
• Reliable thickness tolerance (0.064-0.083") for consistent performance in stacked or precision applications
• Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
• Non-magnetic and spark-resistant properties of brass, making them suitable for electrical and explosive atmosphere applications

Professional Applications & Engineering Value

These brass flat washers deliver critical engineering value by addressing common industrial challenges such as galvanic corrosion, electrical conductivity requirements, and vibration-induced fastener failure. The copper alloy composition inherently resists rust and chemical degradation, making them ideal for marine, plumbing, and electrical systems where corrosion resistance is paramount. With precise inch system dimensions (0.281" ID x 0.5" OD) and controlled Rockwell B60 hardness, they provide consistent bearing surface support for 1/4" screw applications in machinery assembly, automotive components, and precision instruments. The combination of material properties and dimensional accuracy minimizes maintenance needs while ensuring long-term reliability in demanding industrial washers applications.

Specification Summary & Compliance

This flat washer meets standard inch system dimensional requirements with inner diameter 0.281", outer diameter 0.5", and thickness range 0.064-0.083". Manufactured from brass material with Rockwell B60 hardness for consistent mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloy and REACH (EC 1907/2006) regulations (updated 01/17/2023, 233 SVHC), ensuring environmental and safety standards are met for global industrial use.