S-92538A271 0.344" ID x 1.25" OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh industrial environments and extending component lifespan
• Precise 82° countersink angle ensures a flush, professional finish with flat-head screws, reducing snagging and improving safety
• Optimized for 5/16" screws with a 0.344" ID for a secure, non-slip fit that maintains assembly integrity under vibration
• Exceptional durability backed by Rockwell B83 hardness, providing reliable load distribution and resistance to deformation
• Broad surface coverage with a 1.25" OD, effectively distributing pressure and protecting sensitive materials from damage
• Strict compliance assurance with RoHS 3 and REACH regulations, guaranteeing safety for global industrial supply chains
• Consistent dimensional accuracy in inch measurements ensures easy integration and replacement in existing machinery and designs

Professional Applications & Engineering Value

This 82° countersunk washer is engineered to solve critical challenges in industrial assembly, where a flush surface is mandatory for safety and function. Made from 18-8 Stainless Steel, it provides excellent corrosion resistance, making it suitable for outdoor equipment, marine applications, and chemical processing plants where moisture and corrosive agents are prevalent. The precise 82° angle matches standard flat-head screws, eliminating protrusions that could cause injury or interfere with moving parts. Its robust Rockwell B83 hardness ensures it withstands high clamp loads without deforming, maintaining seal integrity in heavy-duty washers applications. By combining reliable performance with regulatory compliance, this washer reduces maintenance downtime and enhances the longevity of 5/16 inch fastening systems in demanding environments.

Specification Summary & Compliance

This countersunk washer features an Inside Diameter (ID) of 0.344" and Outside Diameter (OD) of 1.25" with a thickness range of 0.198-0.218", designed for 5/16" screws in inch measurement systems. It conforms to standard 82° countersink angles for compatibility with common flat-head fasteners. The washer is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83 to ensure dimensional stability under load. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial components.