S-93852A104 0.438" ID x 1" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Exceptional load distribution thanks to the USS flat design with 1" OD and 0.438" ID, preventing surface damage and loosening
• Reliable mechanical strength and deformation resistance provided by Rockwell B68 hardness for consistent performance under stress
• Precision dimensional accuracy ensures perfect fit for 3/8" screws, reducing installation time and improving assembly reliability
• Compliance with industry standards including ASME B18.21.1, guaranteeing interchangeability and quality assurance
• Environmental and workplace safety through RoHS 3 and REACH compliance, meeting global regulatory requirements
• Versatile inch system compatibility for seamless integration with existing industrial equipment and fastener systems

Professional Applications & Engineering Value

This USS Flat Washer in 18-8 Stainless Steel addresses critical engineering challenges in demanding sectors like chemical processing, marine, and outdoor construction. Its inherent corrosion resistance prevents rust and degradation, even in moisture-rich or chemically aggressive settings, reducing maintenance frequency and replacement costs. The flat washer design and precise 1" OD and 0.438" ID dimensions ensure uniform pressure distribution, protecting surfaces from indentation and minimizing bolt loosening due to vibration. With a Rockwell B68 hardness, it maintains structural integrity under heavy loads, making it a dependable choice for industrial washers in machinery, structural assemblies, and heavy-duty equipment where failure is not an option.

Specification Summary & Compliance

This washer conforms to ASME B18.21.1 for dimensional consistency and performance. It is manufactured from 18-8 Stainless Steel with an inner diameter of 0.438", outer diameter of 1", and thickness ranging from 0.064" to 0.104", suitable for 3/8" screw size applications. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and safe for various industrial and international uses.