S-90097A191 3.1 mm ID x 5 mm OD Insulating Washers

Key Features & Benefits at a Glance

• Superior electrical insulation prevents current leakage and short circuits in sensitive electronic assemblies
• Excellent corrosion resistance ensures long-term reliability in humid or chemically aggressive environments
• Wide temperature tolerance from -40°F to 180°F maintains structural integrity in extreme operating conditions
• Rockwell R118 hardness provides exceptional durability and resistance to deformation under load
• Precision M3 sizing with 3.1mm ID ensures perfect fit and consistent performance with standard metric fasteners
• Full regulatory compliance with RoHS 3 and REACH standards meets stringent industrial safety requirements
• Nylon construction offers lightweight protection without galvanic corrosion risk in multi-metal assemblies

Professional Applications & Engineering Value

This M3 nylon sleeve washer delivers critical engineering solutions where electrical insulation and corrosion resistance are paramount. The off-white nylon plastic construction prevents galvanic corrosion between dissimilar metals while providing reliable dielectric barriers in electrical enclosures, control panels, and PCB mounting applications. With its 3.1mm ID precision fit for M3 screw sizes, the washer maintains consistent compression and spacing in automated assembly processes. The sleeve design enhances stability during installation and distributes load evenly, preventing damage to sensitive components. Ideal for industrial applications requiring temperature resistance from -40°F to 180°F, this washer solves common challenges in automotive electronics, outdoor equipment, and chemical processing environments where metal washers would fail.

Specification Summary & Compliance

This metric sleeve washer features precise dimensions with 3.1mm inner diameter, 5mm outer diameter, and 4.8mm overall height. Manufactured from nylon plastic with Rockwell R118 hardness rating, it maintains dimensional stability across its specified temperature range. The product conforms to RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) standards for chemical safety, ensuring suitability for global industrial supply chains and environmentally conscious manufacturing operations.