S-90097A250 0.504" ID x 0.645" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior electrical insulation and corrosion resistance thanks to high-quality nylon plastic construction, ideal for preventing galvanic corrosion in mixed-material assemblies
• Excellent dimensional stability with precise 0.504" ID and 0.645" OD, ensuring perfect fit for 1/2" screws and reliable performance in tight-tolerance applications
• Enhanced load distribution and vibration resistance from the integrated sleeve design (0.548" OD, 0.04" height), reducing stress on fastened components and preventing loosening
• Wide operational temperature resilience from -40°F to 180°F, maintaining mechanical properties and seal integrity in extreme environmental conditions
• Consistent mechanical performance with Rockwell R118 hardness, providing durable, non-marring surface protection that withstands repeated assembly cycles
• Full regulatory compliance assurance with RoHS 3 and REACH standards, making these washers suitable for regulated industries and international supply chains
• Lightweight and chemical-resistant properties of nylon material reduce overall assembly weight while resisting degradation from oils, solvents, and moisture

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this nylon sleeve washer solves critical challenges in electrical enclosures, automotive assemblies, and outdoor equipment. The off-white nylon plastic construction provides reliable electrical insulation while preventing galvanic corrosion between dissimilar metals. The unique sleeve type design extends beyond traditional flat washers, creating superior load distribution that protects sensitive surfaces from compression damage. With its Rockwell R118 hardness and temperature range stability, this inch system washer maintains dimensional integrity under vibration and thermal cycling, eliminating the need for frequent maintenance in harsh environments. The combination of precise dimensions (0.504" ID, 0.645" OD) and chemical resistance makes it an optimal choice for plumbing systems, electronic housings, and marine applications where durability and regulatory compliance are paramount.

Specification Summary & Compliance

This nylon plastic sleeve washer features precise inch system dimensions with 0.504" internal diameter, 0.645" outer diameter, and 0.195" overall height, engineered for 1/2" screw applications. The manufacturing conforms to standard industrial washer specifications with consistent dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, ensuring adherence to the latest environmental and safety requirements for hazardous substance restrictions. Material certification includes Rockwell R118 hardness testing and validated performance across the specified temperature range of -40°F to 180°F.