S-95601A340 0.438" ID x 0.625" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent thermal resistance up to 230°F prevents deformation and maintains sealing integrity in heated environments
• Hard fiber construction provides superior durability and wear resistance compared to standard fiber materials
• Precise dimensional fit with 0.438" ID and 0.625" OD ensures perfect alignment with 7/16" screw sizes
• Electrical insulation properties make these washers ideal for preventing galvanic corrosion and electrical short circuits
• Vibration dampening capability reduces noise and prevents fastener loosening in dynamic applications
• Chemical resistance allows use in environments with exposure to oils, solvents, and mild chemicals
• Non-conductive and non-magnetic properties ensure safe operation in electrical and electronic assemblies

Professional Applications & Engineering Value

These hard fiber flat washers deliver exceptional engineering value in demanding industrial applications where thermal management and electrical isolation are critical. The hard fiber material maintains structural integrity under compression while providing excellent insulation properties, making them ideal for electrical enclosures, motor assemblies, and HVAC systems. Their ability to withstand temperatures up to 230°F ensures reliable performance in heated environments without compromising the sealing function. The precise 0.438" ID and 0.625" OD dimensions guarantee proper fit with 7/16" screw sizes, preventing misalignment and ensuring even load distribution. The red color provides quick visual identification during assembly and quality control processes, streamlining production workflows.

Specification Summary & Compliance

This hard fiber flat washer features precise inch system dimensions with 0.438" inner diameter and 0.625" outer diameter, designed specifically for 7/16" screw sizes. The washer maintains a consistent thickness range of 0.028-0.034" for reliable performance under compression. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and meets REACH (EC 1907/2006) requirements as of June 14, 2023, ensuring environmental safety and regulatory adherence for global industrial applications.