S-90097A166 0.629" ID x 0.8" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal insulation thanks to nylon plastic construction, preventing galvanic corrosion and current leakage in sensitive assemblies
• Exceptional impact and abrasion resistance with Rockwell R118 hardness, ensuring long service life in high-vibration industrial environments
• Reliable performance across extreme temperatures from -40°F to 180°F, maintaining dimensional stability in both outdoor and heated applications
• Precise fit for 5/8" fasteners with 0.629" ID and 0.679" sleeve OD, providing secure alignment and preventing bolt migration
• Enhanced load distribution through 0.8" OD design, reducing surface pressure and material deformation under heavy loads
• Full regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements for industrial components
• Lightweight corrosion-resistant alternative to metal washers, eliminating rust concerns while reducing overall assembly weight

Professional Applications & Engineering Value

This nylon plastic sleeve washer delivers critical engineering solutions where electrical insulation, chemical resistance, and weight reduction are paramount. The off-white nylon construction provides excellent dielectric properties for electrical enclosures, control panels, and marine applications where metal components would create short-circuit risks. With its 0.629" ID precision fit for 5/8" screws, the washer prevents galvanic corrosion between dissimilar metals while maintaining secure fastening in vibrating machinery. The extended temperature range from -40°F to 180°F ensures reliable performance in automotive underhood applications, outdoor equipment, and industrial processing systems where thermal cycling would compromise lesser materials. The sleeve design with 0.5" height acts as both spacer and bearing surface, solving alignment issues in stacked assemblies while protecting finished surfaces from abrasion damage.

Specification Summary & Compliance

This inch-system sleeve washer maintains precise dimensional tolerances with 0.629" inner diameter, 0.8" outer diameter, and 0.66" overall height. The nylon plastic material meets Rockwell R118 hardness specifications for consistent mechanical performance. Manufacturing complies with industry standards for plastic components in mechanical applications. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (including SVHC requirements as of 06/10/2022), ensuring adherence to global environmental regulations for industrial components.