S-90295A400 0.173" ID x 0.375" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent corrosion resistance due to nylon plastic material, ensuring long-term reliability in harsh environments without rust or degradation.
• Superior electrical insulation properties for safe use in electrical assemblies, preventing short circuits and enhancing operational safety.
• Wide temperature tolerance from -40°F to 180°F, maintaining performance and dimensional stability in extreme thermal conditions.
• High hardness rating (Rockwell R115) provides durability and resistance to deformation under load, extending service life in demanding applications.
• Precise dimensional fit with 0.173" ID and 0.375" OD designed for No. 8 screws, ensuring easy installation and secure fastening.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and meets global standards for restricted substances.
• Lightweight and non-magnetic nature of nylon reduces overall assembly weight and avoids interference in sensitive electronic systems.

Professional Applications & Engineering Value

This Nylon Plastic Flat Washer is engineered to address common industrial challenges such as corrosion, electrical hazards, and thermal instability. Made from durable nylon material, it offers inherent corrosion resistance, eliminating the need for additional coatings and reducing maintenance in humid or chemical-exposed settings. Its electrical insulation capability makes it ideal for electrical assemblies and electronics, where metal washers could cause short circuits. The washer's ability to withstand temperatures from -40°F to 180°F ensures reliable performance in automotive, aerospace, and outdoor equipment, preventing brittleness or melting. With a precise ID of 0.173" and OD of 0.375" for No. 8 screws, it provides a snug fit that distributes load evenly, reducing stress concentrations and enhancing joint integrity in heavy-duty applications.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.173", outer diameter of 0.375", and thickness ranging from 0.055" to 0.070", designed for use with No. 8 screw sizes in inch measurements. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring adherence to environmental and safety regulations. The material hardness is specified as Rockwell R115, providing consistent performance under mechanical stress, and it operates effectively within a temperature range of -40°F to 180°F, suitable for various industrial environments.