S-91145A148 0.173" ID x 0.344" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior Electrical Insulation - Nylon 6/6 construction prevents electrical conductivity, enhancing safety in electrical assemblies.
• Excellent Corrosion & Chemical Resistance - Ideal for harsh environments where metal washers would degrade, reducing maintenance needs.
• Wide Temperature Tolerance - Performs reliably from -40°F to 180°F, ensuring stability in varying operational conditions.
• Durable & Non-Marring - Rockwell R108 hardness provides lasting wear resistance without damaging softer mating surfaces.
• Precision Fit for No. 8 Screws - 0.173" ID and sleeve design ensure secure placement and vibration resistance.
• RoHS 3 Compliant - Meets stringent environmental regulations, making it suitable for global supply chains.
• Lightweight & Cost-Effective - Plastic material reduces overall weight and cost compared to metal alternatives.

Professional Applications & Engineering Value

This Nylon 6/6 plastic sleeve washer is engineered to solve critical challenges in electrical, automotive, and industrial assembly applications. Its non-conductive properties prevent short circuits, while the sleeve design provides extended insulation along the bolt shank, protecting against galvanic corrosion. The off-white color allows for easy identification in complex assemblies. With a temperature range of -40°F to 180°F, it maintains dimensional stability in both freezing and moderately high-heat environments, outperforming standard plastic washers. The Rockwell R108 hardness ensures it withstands repeated tightening without cracking, making it a reliable choice for vibration-prone equipment and corrosive chemical exposures where metal fasteners fail.

Specification Summary & Compliance

This inch-system washer features precise dimensions: 0.173" ID, 0.344" OD, 0.313" overall height, and 0.205" sleeve OD. Manufactured from Nylon 6/6 plastic, it is designed for No. 8 screw sizes and complies with RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances. The material's inherent properties provide consistent performance without additional surface treatments, meeting general industrial fastener requirements for non-critical load applications.