S-98029A011 0.203" ID x 0.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: The black-oxide steel finish provides a durable barrier against rust and oxidation, extending the washer's service life in demanding environments.
• Precise Fit for No. 10 Screws: The 0.203" inner diameter ensures a secure and accurate fit, preventing loosening and maintaining assembly integrity.
• Optimal Load Distribution: With a 0.5" outer diameter, this flat washer effectively spreads the load, protecting surfaces and reducing point stress.
• Consistent Performance: A controlled thickness of 0.080-0.099" guarantees uniform performance and reliable clamping force in repetitive applications.
• Compliance with Global Standards: Meets RoHS 3 and REACH regulations, ensuring they are safe for use in regulated industries and international markets.
• Durability in Industrial Settings: Made from robust steel, these washers withstand high vibration and mechanical stress for long-term reliability.
• Versatile Inch System Compatibility: Designed to the inch system of measurement, they integrate seamlessly with existing machinery and standard components.

Professional Applications & Engineering Value

This black-oxide steel flat washer is engineered to solve common industrial challenges such as fastener corrosion and joint failure. The black-oxide surface treatment significantly improves resistance to moisture and chemicals, making it ideal for outdoor equipment, automotive assemblies, and machinery exposed to harsh conditions. Its precise dimensions, including the 0.203" ID for No. 10 screws, ensure a perfect fit that minimizes play and distributes load evenly across surfaces. This prevents damage to soft materials and maintains bolted connection integrity under dynamic loads. By utilizing these inch-system washers, engineers and maintenance teams can achieve reliable, long-lasting assemblies with reduced downtime and maintenance costs, enhancing overall operational efficiency.

Specification Summary & Compliance

This flat washer features an Inner Diameter (ID) of 0.203", Outer Diameter (OD) of 0.5", and a Thickness range of 0.080-0.099", designed for use with No. 10 screw sizes in inch measurements. It is manufactured from black-oxide coated steel for durability. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant as of January 17, 2023, adhering to strict environmental and safety standards for industrial components.