S-91435A210 0.406" ID x 0.812" OD ASTM D5213 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability for reliable performance in extreme environments from -450°F to 750°F
• Superior chemical and wear resistance due to polyimide plastic construction, extending service life in harsh conditions
• Precise dimensional fit with 3/8" screw size compatibility and 0.406" ID for secure fastening in inch-system assemblies
• ASTM D5213 compliance ensures material consistency and performance reliability for industrial applications
• Ultra-thin profile (0.005-0.006" thickness) ideal for space-constrained assemblies without compromising strength
• Non-conductive and corrosion-resistant properties prevent galvanic corrosion and electrical interference
• Amber color coding allows for easy visual identification and inventory management

Professional Applications & Engineering Value

This polyimide plastic flat washer delivers critical engineering solutions for high-temperature applications where metal washers would fail. The ASTM D5213 compliant material maintains structural integrity across an unprecedented -450°F to 750°F temperature range, making it ideal for aerospace, automotive, and industrial heating systems. The 0.406" ID provides precise fit for 3/8" fasteners while the 0.812" OD ensures optimal load distribution. As a thermal resistant washer, it prevents heat transfer and maintains seal integrity in extreme environments, solving common thermal expansion and degradation problems in critical assemblies.

Specification Summary & Compliance

This inch-system flat washer features precise dimensions: 0.406" ID, 0.812" OD, and 0.005-0.006" thickness for 3/8" screw size applications. Manufactured to ASTM D5213 material specifications, it ensures consistent performance and material quality. The washer operates reliably across the full -450°F to 750°F temperature range and meets industry standards for plastic flat washers in demanding environments. While hardness is not rated, the polyimide construction provides excellent mechanical properties for industrial fastening requirements.