S-98029A024 0.125" ID x 0.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide steel finish, extending service life in humid or demanding environments.
• Precise dimensional fit with 0.125" ID and 0.25" OD, ensuring reliable load distribution and secure fastening for No. 4 screws.
• Enhanced durability through the robust steel construction, providing consistent performance under mechanical stress.
• Optimal thickness range of 0.049-0.068" allows for effective spacing and vibration dampening in assemblies.
• Compliance with major regulations including RoHS 3 and REACH, ensuring safe and sustainable use in industrial applications.
• Versatile industrial suitability for machinery, electronics, and general hardware where reliable flat washers are critical.

Professional Applications & Engineering Value

This black-oxide steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and imprecise load bearing. The black-oxide surface treatment provides a protective layer that minimizes rust and wear, making it ideal for applications in electronics, automotive, and outdoor equipment where moisture resistance is essential. Its precise 0.125" inner diameter and 0.25" outer diameter ensure a snug fit on No. 4 screw sizes, preventing loosening under vibration and distributing pressure evenly to protect sensitive surfaces. By incorporating these flat washers into your designs, you enhance assembly longevity and reduce maintenance costs, supported by compliance with environmental standards for safe industrial use.

Specification Summary & Compliance

This washer meets standard inch system dimensions with an ID of 0.125", OD of 0.25", and thickness ranging from 0.049" to 0.068", tailored for No. 4 screw applications. It conforms to general industrial specifications for flat washers and is verified as RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead in steel, and REACH (EC 1907/2006) compliant as of January 17, 2023, covering 233 SVHCs, ensuring adherence to health and environmental regulations.