S-90089A310 0.25" ID x 0.375" OD Plastic Washers

Key Features & Benefits at a Glance

• Excellent electrical insulation properties due to hard fiber construction, preventing current leakage in sensitive equipment.
• Reliable thermal performance with a maximum temperature resistance of 230°F, ideal for applications involving moderate heat.
• Precise dimensional fit with a 0.25" inner diameter designed specifically for 1/4" screws, ensuring secure fastening and alignment.
• Durable and resilient material provides effective load distribution and vibration dampening, extending the life of your assemblies.
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH standards, ensuring safety and regulatory adherence.
• Consistent thickness control between 0.014" and 0.016" for uniform performance and predictable compression in various applications.
• Versatile industrial use in inch-system applications where non-metallic, insulating washers are required.

Professional Applications & Engineering Value

This hard fiber flat washer is engineered to address common challenges in electrical and general industrial assembly. Its non-conductive properties make it an ideal choice for electrical insulation, preventing short circuits in control panels, motor mounts, and electronic enclosures. The gray hard fiber material offers superior resilience compared to standard plastics, effectively absorbing vibration and distributing load under 1/4" screw heads to prevent surface damage and loosening. With a temperature resistance up to 230°F, it performs reliably in environments with elevated heat, such as near engines or in industrial machinery, where metallic washers could transfer heat or corrode. The precise 0.25" ID and 0.375" OD ensure a perfect fit, simplifying installation and enhancing the integrity of your fastened joints in demanding industrial applications.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensions with an Inner Diameter of 0.25", Outer Diameter of 0.375", and a controlled Thickness of 0.014-0.016". It is designed for use with 1/4" screw sizes and is manufactured from hard fiber for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for hazardous substances.