S-98125A030 0.344" ID x 0.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise dimensional fit with 0.344" inner diameter designed specifically for 5/16" screws, ensuring secure fastening and reduced vibration.
• Enhanced load distribution from the 0.75" outer diameter, minimizing surface pressure and preventing damage to assembled materials.
• Consistent mechanical strength backed by Rockwell B83 hardness, providing reliable performance under stress without deformation.
• Full regulatory compliance with RoHS 3 and REACH standards, guaranteeing safe use in industrial and export-focused applications.
• Durable and maintenance-free due to the stainless steel material, reducing replacement frequency and total cost of ownership.

Professional Applications & Engineering Value

These 5/16" flat washers are engineered to address common industrial challenges like corrosion-induced failure and uneven load distribution. Made from 18-8 stainless steel, they offer excellent resistance to rust, chemicals, and moisture, making them suitable for outdoor, marine, and chemical processing equipment. The precise inch-based dimensions (0.344" ID and 0.75" OD) ensure a perfect fit for standard 5/16" screws, enhancing joint integrity and preventing loosening in high-vibration settings such as machinery, automotive assemblies, and structural frameworks. By combining material durability with dimensional accuracy, these washers extend equipment lifespan and reduce maintenance downtime.

Specification Summary & Compliance

This flat washer meets standard inch sizing with an inner diameter of 0.344", outer diameter of 0.75", and thickness ranging from 0.168" to 0.193". It is manufactured from 18-8 stainless steel with a hardness of Rockwell B83 for consistent performance. The product conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial and international applications.