S-98029A049 0.469" ID x 1.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from black-oxide steel surface treatment, extending service life in demanding environments
• Precise dimensional compatibility with 0.469" ID and 1.25" OD ensuring perfect fit for 7/16" screw applications
• Superior load distribution with optimal thickness range (0.168-0.193") to prevent surface damage and loosening
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage
• Durable steel construction providing reliable performance in high-stress assembly operations
• Inch system standardization ensuring seamless integration with existing imperial fastener systems

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers critical engineering solutions for industrial applications requiring 7/16" screw fastening systems. The black-oxide surface treatment creates a protective barrier against oxidation and corrosion, significantly extending component lifespan in humid or chemically aggressive environments. The precisely engineered 0.469" ID ensures secure seating on 7/16" screws without binding, while the 1.25" OD provides optimal surface coverage to distribute clamping forces evenly. This prevents material deformation, reduces stress concentrations, and maintains joint integrity in machinery assembly, structural frameworks, and heavy equipment manufacturing where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

Manufactured to standard inch system dimensions with 0.469" inner diameter and 1.25" outer diameter. Thickness maintained within 0.168-0.193" tolerance range for consistent performance. RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel, and REACH (EC 1907/2006) compliant with current SVHC requirements. Designed specifically for use with 7/16" screw sizes in industrial fastening applications.