S-98029A033 0.531" ID x 1.125" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-oxide steel finish for extended service life in harsh industrial environments
• Precise dimensional compatibility with 0.531" ID designed specifically for 1/2" screw applications ensuring perfect fit
• Optimal load distribution with 1.125" OD providing excellent surface coverage and pressure dispersion
• Consistent performance with controlled thickness range of 0.105-0.130" for reliable assembly results
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Durable steel construction offering excellent mechanical strength and long-term reliability
• Inch system standardization ensuring seamless integration with existing industrial equipment and components

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers exceptional engineering value in demanding industrial applications where corrosion resistance and dimensional precision are critical. The black-oxide surface treatment provides superior protection against rust and oxidation, making it ideal for automotive assemblies, machinery manufacturing, and outdoor equipment where environmental exposure is a concern. Engineered specifically for 1/2" screw applications, the precise 0.531" inner diameter ensures secure fastening without play, while the 1.125" outer diameter effectively distributes clamping force across wider surfaces. This industrial-grade flat washer solves common assembly challenges by preventing surface damage, reducing maintenance frequency, and extending the service life of connected components in mechanical systems and structural frameworks.

Specification Summary & Compliance

This flat washer features precision inch dimensions with 0.531" inner diameter, 1.125" outer diameter, and controlled thickness range of 0.105-0.130" for consistent performance. Manufactured from black-oxide steel with standard inch system measurements, it complies with RoHS 3 (2015/863/EU) standards under exemption 6(a) for lead as an alloying element in steel and maintains full REACH (EC 1907/2006) compliance with current SVHC requirements as of January 17, 2023. The product meets industrial specifications for flat washers used in mechanical assemblies and structural applications.