S-90295A234 0.156" ID x 0.562" OD ASME B18.22.1 Plastic Washers
Plastic Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Excellent corrosion resistance due to nylon plastic construction, eliminating rust and galvanic corrosion in harsh environments
- Superior electrical insulation properties for safe use in electrical assemblies and to prevent short circuits
- Wide operating temperature range from -40°F to 300°F, ensuring reliable performance in both extreme cold and high-heat applications
- Consistent dimensional stability with precise 0.156" ID and 0.562" OD for perfect fit with No. 6 screws, reducing assembly errors
- High durability with Rockwell R115 hardness, providing excellent resistance to wear, abrasion, and vibration loosening
- Regulatory compliance assurance with RoHS 3 and REACH standards, making them suitable for global markets and sensitive applications
- Lightweight and non-marring surface protection that prevents damage to sensitive materials during fastening
Professional Applications & Engineering Value
These nylon plastic flat washers provide critical solutions for engineering challenges where metal washers fail. The green nylon material offers inherent chemical resistance against oils, solvents, and many industrial chemicals, while the ASME B18.22.1 compliance ensures dimensional precision for consistent performance in automated assembly. The 0.156" ID provides secure seating on No. 6 screws without binding, while the 0.562" OD distributes clamping force effectively to prevent surface damage. Ideal for electrical enclosures, food processing equipment, marine applications, and outdoor infrastructure, these washers maintain integrity across the full -40°F to 300°F temperature range, outperforming many plastic alternatives in thermal stability.
Specification Summary & Compliance
This No. 6 flat washer features precise inch system dimensions with 0.156" internal diameter, 0.562" outer diameter, and thickness ranging from 0.036" to 0.045". Manufactured to ASME B18.22.1 specifications for dimensional accuracy and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (updated 06/14/2023, 235 SVHC), meeting the latest environmental and safety regulations for industrial components.
