S-91145A259 0.26" ID x 0.505" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior electrical insulation and corrosion resistance from Nylon 6/6 material, ideal for preventing galvanic corrosion and electrical shorts in sensitive assemblies.
• Excellent dimensional stability and load distribution with precise 0.26" ID and 0.505" OD, ensuring a perfect fit for 1/4" screws and reducing stress concentrations.
• Wide operational temperature tolerance from -40°F to 180°F, maintaining performance in extreme environments without cracking or deforming.
• Enhanced durability and wear resistance due to Rockwell R108 hardness, providing long service life in high-vibration applications.
• Lightweight and non-magnetic properties for use in electronics, aerospace, and marine industries where weight and magnetic interference are concerns.
• Compliance with global environmental and safety standards including RoHS 3 and REACH, ensuring safe use in regulated markets and protecting end-users.
• Cost-effective alternative to metal washers with reduced maintenance needs and no risk of rust, lowering total cost of ownership.

Professional Applications & Engineering Value

This Nylon 6/6 Plastic Sleeve Washer is engineered to address common industrial challenges such as component wear, electrical isolation, and chemical exposure. Its sleeve design provides superior bearing surface support for 1/4" screw fastenings, preventing loosening under dynamic loads. The off-white color allows for easy identification in assembly lines, while the material's low moisture absorption ensures consistent performance in humid conditions. Ideal for electrical enclosures, automotive assemblies, and machinery, this washer reduces noise, minimizes galvanic corrosion between dissimilar metals, and offers reliable insulation up to 180°F. By integrating precise inch system measurements and a robust temperature-resistant profile, it delivers long-term reliability in demanding applications, from outdoor equipment to precision instruments.

Specification Summary & Compliance

This washer meets exact dimensional specifications: ID 0.26", OD 0.505", Thickness 0.063", Sleeve OD 0.312", and Sleeve Height 0.094", designed for compatibility with 1/4" screw sizes. Manufactured from Nylon 6/6 plastic with a hardness of Rockwell R108, it adheres to standard industrial tolerances. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for global industrial use.