S-96025A407 4.3 mm ID x 9 mm OD Clipped Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Black-oxide steel coating provides reliable protection against rust and wear, extending service life in harsh environments.
• Precision Fit for M4 Screws: 4.3 mm inner diameter ensures a snug, secure fit, reducing vibration loosening and improving assembly stability.
• Optimized Load Distribution: 9 mm outer diameter and 0.7-0.9 mm thickness help spread pressure evenly, minimizing surface damage and fastener failure.
• Easy Installation with Clipped Design: 7.8 mm clipped width allows for quick alignment and placement, saving time in high-volume assembly operations.
• Durable Material Strength: Rockwell B40 hardness offers excellent mechanical toughness, resisting deformation under stress for long-term reliability.
• Compliant with Global Standards: Meets RoHS 3 and REACH regulations, ensuring safe, eco-friendly use in international industrial markets.
• Metric System Compatibility: Designed for metric fastening systems, facilitating seamless integration with M4 screws in diverse applications.

Professional Applications & Engineering Value

This M4 metric clipped washer is engineered to address common challenges in industrial assemblies, such as corrosion-induced failures and misalignment issues. The black-oxide steel material, combined with a Rockwell B40 hardness, ensures robust performance in demanding settings like automotive, machinery, and electronics, where exposure to moisture and mechanical stress is frequent. The precise 4.3 mm ID and 9 mm OD dimensions, along with the clipped design (7.8 mm width), enable quick, accurate placement, reducing installation time and preventing assembly errors. By providing consistent corrosion resistance and reliable load distribution, this washer enhances the longevity and safety of M4 screw fastenings, making it ideal for high-vibration environments and precision engineering projects.

Specification Summary & Compliance

This washer adheres to standard metric dimensions with an inner diameter of 4.3 mm, outer diameter of 9 mm, and thickness ranging from 0.7 to 0.9 mm, ensuring precise fit for M4 screw sizes. It meets industry tolerances for general use and is manufactured from black-oxide steel with a hardness of Rockwell B40 for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial applications.