S-91225A315 15 mm ID x 27.7 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior thermal resistance up to 250°F (121°C), ensuring reliable performance in high-heat industrial environments without deformation.
• Excellent hardness and durability with Rockwell M105 rating, providing long-lasting wear resistance and reduced replacement frequency.
• Effective electrical insulation properties due to phenolic plastic material, enhancing safety in electrical assemblies and preventing short circuits.
• Precise dimensional fit with 15 mm inner diameter and 27.7 mm outer diameter, designed for secure mounting on M14 screws to prevent loosening.
• Consistent thickness control between 2.2-2.5 mm, ensuring uniform load distribution and improved joint integrity in metric fastening systems.
• Full regulatory compliance with RoHS 3 and REACH standards, guaranteeing safe, eco-friendly use in global industrial supply chains.
• Corrosion and chemical resistance from phenolic construction, ideal for harsh conditions in automotive, electrical, and machinery applications.

Professional Applications & Engineering Value

This M14 phenolic plastic flat washer is engineered to address critical challenges in industrial settings where temperature fluctuations, electrical hazards, and chemical exposure are common. Made from high-grade phenolic plastic, it provides reliable electrical insulation and withstands continuous exposure up to 250°F, preventing thermal degradation that plagues metal washers. The metric flat washer design, with an ID of 15 mm and OD of 27.7 mm, ensures a precise fit for M14 screws, reducing vibration-induced loosening and maintaining assembly integrity. Its Rockwell M105 hardness offers exceptional abrasion resistance, making it suitable for heavy-duty applications in electrical enclosures, automotive systems, and machinery where durability and compliance with RoHS and REACH standards are mandatory for safe, sustainable operations.

Specification Summary & Compliance

This flat washer adheres to metric system standards with precise dimensions: Inner Diameter 15 mm, Outer Diameter 27.7 mm, and Thickness 2.2-2.5 mm, ensuring consistent performance for M14 screw sizes. Manufactured from phenolic plastic with a brown color, it meets Rockwell M105 hardness for mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting use in regulated industrial and electrical applications globally.