S-90472A110 0.281" ID x 0.625" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-7 PH stainless steel, ideal for harsh environments and extending service life
• High strength and durability with Rockwell C40 hardness, providing reliable load distribution and resistance to deformation under stress
• Precision dimensional fit with 1/4" screw compatibility (0.281" ID, 0.625" OD), ensuring secure fastening and reducing assembly errors
• Guaranteed performance consistency through compliance with the rigorous ASME B18.21.1 standard for flat washers
• Enhanced safety and reliability in heavy-duty applications due to controlled thickness (0.051-0.080") for optimal clamping force
• Environmentally responsible manufacturing, fully compliant with RoHS 3 and REACH regulations for safe use in regulated industries
• Versatile SAE design suitable for a wide range of industrial and mechanical assemblies requiring inch-system components

Professional Applications & Engineering Value

This 17-7 PH Stainless Steel SAE Flat Washer is engineered to address critical challenges in demanding industrial settings. Its semi-austenitic stainless steel composition provides excellent corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements where carbon steel washers would fail. The Rockwell C40 hardness ensures the washer maintains its shape and function under high vibrational loads and repeated stress, preventing loosening and joint failure. Designed for use with 1/4" screws, it offers precise fit and superior load distribution, protecting surfaces and reducing point stress in assemblies from heavy machinery to structural frameworks. Compliance with ASME B18.21.1 guarantees dimensional accuracy and mechanical properties, providing engineers with a reliable, specification-grade component that enhances the longevity and safety of their designs.

Specification Summary & Compliance

This washer conforms to ASME B18.21.1 for dimensional and mechanical requirements, with an Inside Diameter of 0.281", Outside Diameter of 0.625", and Thickness ranging from 0.051" to 0.080". It is manufactured from 17-7 PH Stainless Steel and hardened to Rockwell C40. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and consumer applications.