S-90295A248 0.285" ID x 1.25" OD ASME B18.22.1 Plastic Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with nylon plastic construction, eliminating rust and galvanic corrosion in harsh environments
• Excellent electrical insulation properties for enhanced safety in electrical assemblies and sensitive equipment
• Broad temperature tolerance from -40°F to 300°F, ensuring reliable performance in both extreme cold and high-heat applications
• High durability with a Rockwell R115 hardness rating, providing long-lasting wear resistance and load distribution
• Precise dimensional fit for 1/4" screw sizes with 0.285" ID and 1.25" OD, preventing loosening and ensuring secure fastening
• Compliance with ASME B18.22.1 standards, guaranteeing consistent quality, interchangeability, and engineering reliability
• Environmentally responsible manufacturing, fully compliant with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

These nylon plastic flat washers deliver critical engineering solutions where metal fasteners fall short. The non-conductive, non-magnetic properties of nylon make them ideal for electrical enclosures, control panels, and electronic assemblies, preventing short circuits. Their inherent corrosion resistance is invaluable in chemical processing, marine, and food-grade equipment, eliminating contamination risks. The green color provides easy identification for specific assembly requirements. With a temperature range of -40°F to 300°F, they maintain integrity in outdoor, automotive, and HVAC systems, while the ASME B18.22.1 compliant dimensions ensure perfect fit with 1/4" screw sizes, reducing assembly errors and improving project efficiency.

Specification Summary & Compliance

This flat washer features an Inside Diameter (ID) of 0.285", Outside Diameter (OD) of 1.25", and Thickness of 0.047-0.080", designed for use with 1/4" screws in inch measurement systems. It is manufactured to meet the dimensional and material requirements of the ASME B18.22.1 standard. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for industrial and commercial use.