S-92538A355 0.281" ID x 1.25" OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise 82° countersink angle ensures a flush, professional finish with flat-head screws, eliminating protrusions and improving safety.
• Optimized load distribution from the 1.25" outer diameter, reducing surface pressure and preventing material damage.
• Excellent mechanical durability provided by Rockwell B83 hardness, resisting deformation under high stress and extending service life.
• Guaranteed dimensional accuracy with 0.281" inner diameter for a perfect fit on 1/4" screws, ensuring easy installation and reliable performance.
• Compliance with global standards including RoHS 3 and REACH, making them suitable for regulated industries and international projects.
• Consistent thickness control between 0.271" and 0.291" for uniform performance and predictable assembly results.

Professional Applications & Engineering Value

This 82° countersunk washer is engineered to solve common fastening challenges in demanding applications. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it ideal for marine, chemical processing, and food industry equipment where moisture and chemicals are present. The precise 82° countersink angle matches standard flat-head screws perfectly, creating smooth, flush surfaces that eliminate snagging hazards in machinery and improve aerodynamic profiles in automotive or aerospace components. With its 1.25" OD and controlled thickness, it effectively distributes clamping force over a wider area, preventing surface damage to soft materials like aluminum or composites while maintaining joint integrity under vibration and thermal cycling. These precision washers deliver reliable performance in structural assemblies, electrical enclosures, and heavy-duty machinery where dimensional accuracy and long-term durability are critical.

Specification Summary & Compliance

This countersunk washer features inch system dimensions with 0.281" ID, 1.25" OD, and thickness ranging from 0.271" to 0.291", designed specifically for 1/4" screws. Manufactured from 18-8 stainless steel with Rockwell B83 hardness for consistent mechanical properties. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global supply chains.