S-91145A242 0.202" ID x 0.433" OD Insulating Washers

Key Features & Benefits at a Glance

• Superior Electrical Insulation & Corrosion Resistance – Made from durable Nylon 6/6 plastic, this washer prevents galvanic corrosion and eliminates electrical conductivity in sensitive assemblies.
• Exceptional Temperature Stability – Maintains structural integrity across a wide operating range from -40°F to 180°F, ensuring reliable performance in both cold and moderately heated environments.
• High Mechanical Strength & Wear Resistance – With a Rockwell R108 hardness rating, the washer resists deformation and wear under load, extending service life in high-vibration applications.
• Precision Fit for No. 10 Screws – The 0.202" ID and 0.433" OD ensure a snug, secure fit, reducing the risk of loosening and improving overall assembly stability.
• Enhanced Load Distribution & Sealing – The sleeve design (0.31" OD, 0.315" height) provides increased bearing surface, distributing pressure evenly and acting as a light-duty seal against dust and moisture.
• Full Regulatory Compliance – Meets RoHS 3 and REACH standards, making it safe for use in regulated industries and environmentally sensitive applications.
• Lightweight & Non-Marring – The off-white Nylon 6/6 material prevents damage to finished surfaces and reduces component weight without sacrificing durability.

Professional Applications & Engineering Value

This Nylon 6/6 plastic sleeve washer is engineered to address common challenges in electrical, automotive, and machinery assemblies where metal fasteners can cause short circuits or galvanic corrosion. The sleeve design not only distributes clamp load over a wider area but also acts as an insulating barrier, protecting sensitive components. Its temperature resistance from -40°F to 180°F ensures dependable performance in outdoor equipment, HVAC systems, and electronic enclosures exposed to varying climates. The Rockwell R108 hardness provides excellent resistance to abrasion and compression set, making it ideal for applications involving vibration or repeated disassembly. By specifying this RoHS and REACH compliant washer, engineers achieve longer maintenance intervals and enhanced safety in No. 10 screw installations.

Specification Summary & Compliance

This sleeve washer features precise inch-dimensioning with an ID of 0.202", OD of 0.433", thickness of 0.079", and overall height of 0.394". The sleeve portion has an OD of 0.31" and height of 0.315". It is manufactured from Nylon 6/6 plastic with a Rockwell R108 hardness and is designed for use with No. 10 screws. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial and consumer applications.