S-91619A400 0.109" ID x 0.312" OD High-Temperature Mica Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability withstanding continuous temperatures up to 1050°F, preventing deformation in high-heat industrial processes
• Superior electrical insulation properties thanks to natural mica composition, reducing short-circuit risks in electrical assemblies
• Precision dimensional fit with 0.312" OD and 0.109" ID specifically engineered for No. 3 screws, ensuring secure fastening without slippage
• Ultra-thin profile (0.004-0.006" thickness) enables compact designs while maintaining effective insulation barriers
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Consistent performance in inch-system applications, providing reliable compatibility with standard industrial equipment
• Durable mica construction maintains structural integrity under thermal cycling, extending service life in demanding environments

Professional Applications & Engineering Value

This mica flat washer delivers critical engineering solutions where conventional materials fail. The natural mica material provides exceptional dielectric strength and thermal resistance, making it ideal for electrical insulation applications in transformers, heating elements, and power generation equipment. Its ability to maintain stability at 1050°F maximum temperature prevents thermal degradation that commonly plagues polymer-based washers. The precise 0.312" OD x 0.109" ID dimensions ensure perfect alignment with No. 3 screws, while the controlled 0.004-0.006" thickness allows for tight spacing in compact assemblies. These high-temperature washers are particularly valuable in aerospace, automotive, and industrial heating systems where reliable performance under extreme conditions is non-negotiable.

Specification Summary & Compliance

This inch-system flat washer features precise dimensional specifications: 0.312" outer diameter, 0.109" inner diameter, and thickness ranging 0.004-0.006". Designed specifically for No. 3 screw applications, the washer maintains dimensional consistency across production batches. The product fully complies with RoHS 3 (2015/863/EU) standards and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring environmental responsibility and workplace safety. Manufactured from premium-grade mica material in beige coloration, these washers meet industry expectations for high-temperature electrical insulation components without additional certifications or ratings required for standard applications.