S-98029A051 0.531" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from black-oxide steel surface treatment, extending service life in harsh industrial environments
• Optimal load distribution with 1.5" outer diameter providing wider surface coverage for 1/2" screw applications
• Precision dimensional fit with 0.531" inner diameter ensuring secure fastening and vibration resistance
• Enhanced durability through robust 0.198-0.233" thickness range, suitable for heavy-duty mechanical applications
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage
• Versatile industrial compatibility designed for inch-system machinery and equipment maintenance
• Reliable performance in high-stress applications due to quality steel construction and precise manufacturing

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers exceptional engineering value through its corrosion-resistant properties and precise dimensional specifications. The 0.531" ID ensures perfect compatibility with 1/2" screws, while the generous 1.5" OD provides superior load distribution across connected surfaces. Engineered for heavy-duty industrial applications, these washers prevent surface damage, reduce fastener loosening from vibration, and maintain joint integrity in demanding environments including machinery assembly, structural frameworks, and equipment maintenance. The black-oxide finish offers enhanced protection against rust and oxidation, making these flat washers ideal for automotive, construction, and manufacturing sectors where reliability and longevity are critical.

Specification Summary & Compliance

Manufactured to precise inch-system dimensions: 0.531" inner diameter, 1.5" outer diameter, and 0.198-0.233" thickness range. Constructed from black-oxide steel for industrial-grade performance. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) standards as of 01/17/2023 (233 SVHC). Designed specifically for use with 1/2" screw applications in mechanical and structural fastening systems.