S-98029A045 0.406" ID x 0.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide steel finish, extending component life in demanding environments.
• Precise fit and reliable load distribution with a 0.406" inner diameter designed specifically for 3/8" screws.
• Enhanced surface protection and reduced galling due to the black-oxide coating, improving assembly smoothness.
• Durable construction from hardened steel, providing consistent performance under pressure.
• Global compliance assurance with RoHS 3 and REACH standards, ensuring safe and sustainable use in international markets.
• Versatile thickness range (0.079-0.098") for accommodating minor variations and ensuring a secure fit.
• Broad industrial applicability thanks to the inch measurement system, compatible with standard equipment and designs.

Professional Applications & Engineering Value

This 3/8" flat washer is engineered to address common industrial challenges such as surface wear, corrosion, and fastener loosening. Constructed from black-oxide steel, it provides a robust barrier against moisture and chemicals, making it ideal for automotive, machinery, and outdoor assembly applications. The precise 0.406" ID ensures a snug fit on 3/8" screws, preventing misalignment and distributing loads evenly to reduce stress concentrations. Its inch system compatibility simplifies sourcing and integration into existing designs, while the corrosion-resistant properties minimize maintenance needs and extend the service life of your assemblies, delivering long-term reliability and cost savings.

Specification Summary & Compliance

This washer features an inner diameter of 0.406", outer diameter of 0.75", and thickness ranging from 0.079" to 0.098", designed for use with 3/8" screw sizes in the inch measurement system. It is manufactured from black-oxide steel for durability and corrosion resistance. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead in steel and REACH (EC 1907/2006) compliant as of January 17, 2023, ensuring adherence to environmental and safety regulations.