S-90377A162 0.266" ID x 2.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise dimensional fit with 0.266" ID and 2.5" OD, ensuring secure seating and optimal load distribution for 1/4" screws.
• Enhanced durability and longevity from the 0.050-0.080" thickness range, providing reliable performance under mechanical stress.
• Excellent surface protection through the black-oxide finish, reducing friction and preventing galling during installation.
• Broad compatibility with inch-system fasteners, making it versatile for various assembly and maintenance tasks.
• Environmental and safety compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries.
• Cost-effective maintenance solution by minimizing replacement needs and downtime in demanding applications.

Professional Applications & Engineering Value

This flat washer is engineered to address common industrial challenges such as corrosion, vibration loosening, and uneven load distribution. Made from Black-Oxide 18-8 Stainless Steel, it offers exceptional resistance to rust and chemical exposure, making it suitable for marine, automotive, and construction environments. The precise 2.5" OD and 0.266" ID dimensions ensure a perfect fit with 1/4" screws, reducing the risk of assembly errors and enhancing joint integrity. The black-oxide surface treatment not only improves aesthetics but also provides a protective layer that minimizes wear and extends service life. Ideal for heavy-duty machinery, electrical enclosures, and structural frameworks, this washer delivers reliable performance where precision and durability are critical.

Specification Summary & Compliance

This flat washer adheres to inch-system measurement standards with an inner diameter of 0.266", outer diameter of 2.5", and thickness range of 0.050-0.080". It is designed for use with 1/4" screws and manufactured from 18-8 stainless steel with a black-oxide finish. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial applications. While hardness is not rated, the material and construction provide consistent performance in various load-bearing scenarios.