S-95610A350 4.3 mm ID x 9 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent corrosion resistance ensures long-term reliability in harsh environments without rust or degradation
• Superior electrical insulation properties prevent current leakage and short circuits in electrical assemblies
• Wide temperature tolerance from -40°F to 180°F maintains structural integrity across extreme operating conditions
• Lightweight nylon construction reduces overall assembly weight while providing durable performance
• Chemical resistance protects against degradation from oils, solvents and various industrial chemicals
• Precision M4 compatibility with 4.3mm ID ensures perfect fit and even load distribution for M4 screws
• RoHS 3 compliance meets strict environmental regulations for hazardous substance restrictions

Professional Applications & Engineering Value

This M4 nylon plastic flat washer delivers critical engineering solutions where metal fasteners fall short. The black nylon material provides inherent electrical insulation, making it ideal for electronic enclosures, control panels, and electrical applications where current isolation is paramount. Its corrosion-resistant properties eliminate galvanic corrosion concerns when used with dissimilar metals, while the Rockwell R120 hardness ensures consistent performance under compression loads. The metric dimensions (4.3mm ID × 9mm OD) provide precise fitment for M4 screw applications in automotive, aerospace, and industrial equipment where weight reduction and chemical resistance are operational necessities. The temperature range from -40°F to 180°F accommodates both cryogenic and elevated temperature environments without compromising the washer's structural integrity or dimensional stability.

Specification Summary & Compliance

This metric flat washer features precise dimensional specifications including 4.3mm internal diameter, 9mm outer diameter, and 0.6-1.0mm thickness range. Manufactured from nylon plastic with Rockwell R120 hardness rating, it maintains dimensional stability across its specified temperature operating range. The product is fully RoHS 3 (2015/863/EU) compliant, ensuring adherence to strict environmental regulations regarding hazardous substances. Designed specifically for M4 screw size applications, this washer provides reliable performance in metric fastener systems while meeting industry standards for electrical insulation and chemical resistance requirements.