S-98370A024 0.125" ID x 0.312" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh or humid industrial environments.
• Enhanced load distribution due to precise 0.125" ID and 0.312" OD dimensions, preventing surface damage and loosening under vibration.
• Exceptional mechanical durability from Rockwell B83 hardness, ensuring the washer maintains shape and function under repeated stress.
• Perfect compatibility with No. 4 screws, providing a reliable fit and secure fastening in assemblies.
• Consistent thickness control between 0.064" and 0.083", guaranteeing uniform pressure and spacing in your applications.
• Environmental and safety compliance with RoHS 3 and REACH standards, making them safe for regulated industries and global supply chains.
• Long-term reliability in demanding conditions, reducing maintenance needs and replacement costs.

Professional Applications & Engineering Value

These 18-8 stainless steel flat washers are engineered to address common industrial challenges such as fastener corrosion, vibration-induced loosening, and material degradation. The corrosion-resistant properties make them ideal for applications in marine, chemical processing, and outdoor equipment, where exposure to moisture and chemicals is frequent. With precise inch system dimensions including a 0.125" ID and 0.312" OD, they ensure accurate alignment and even load distribution for No. 4 screw fastenings, minimizing stress concentrations and extending the life of assembled components. This combination of material integrity and dimensional accuracy provides reliable performance in industrial washers for machinery, electronics, and automotive systems, enhancing overall assembly durability and safety.

Specification Summary & Compliance

This flat washer adheres to standard inch measurement tolerances, with an inner diameter of 0.125", outer diameter of 0.312", and thickness ranging from 0.064" to 0.083". It is manufactured from 18-8 stainless steel with a hardness of Rockwell B83, ensuring consistent quality and performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for use in environmentally conscious and safety-regulated industries.