S-90097A151 0.379" ID x 0.535" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal insulation provided by nylon plastic construction, preventing galvanic corrosion and protecting components in electrical applications
• Excellent vibration and noise dampening characteristics that maintain fastener integrity and reduce maintenance needs in high-vibration environments
• Wide temperature resilience from -40°F to 180°F, ensuring reliable performance in both extreme cold and moderate heat conditions
• Precise 3/8" screw compatibility with 0.379" ID and 0.535" OD for perfect fitment and consistent load distribution across mating surfaces
• Rockwell R118 hardness rating delivers optimal durability and resistance to deformation under pressure, extending service life
• Chemical and moisture resistance inherent to nylon material, protecting against degradation in harsh industrial environments
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets and sensitive applications

Professional Applications & Engineering Value

This nylon plastic sleeve washer solves critical engineering challenges where metal washers would cause electrical shorts, galvanic corrosion, or excessive noise. The sleeve design with 0.419" OD and 0.125" height provides superior insulation and spacing capabilities while the off-white nylon construction offers excellent chemical resistance for harsh environments. Engineers specify this 3/8" compatible washer for electrical enclosures, automotive assemblies, and outdoor equipment where temperature fluctuations from -40°F to 180°F would compromise lesser materials. The Rockwell R118 hardness ensures maintained clamping force without embrittlement, making it ideal for vibration-prone applications across industrial machinery, transportation, and construction sectors.

Specification Summary & Compliance

This inch-system sleeve washer maintains precise dimensions with 0.379" ID, 0.535" OD, and 0.25" overall height for consistent performance. Manufactured to industry standards for plastic washers, it features full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. The temperature rating from -40°F to 180°F confirms suitability for most industrial applications without material degradation.