S-93852A132 0.375" ID x 0.875" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Enhanced load distribution with a 0.875" outer diameter, reducing surface pressure and preventing damage to assembled materials.
• Precise fit for 5/16" screws with a 0.375" inner diameter, ensuring secure fastening and minimizing loosening under vibration.
• Exceptional durability from Rockwell B68 hardness, offering reliable performance under high-stress and repetitive use conditions.
• Compliance with ASME B18.21.1 standards guarantees dimensional accuracy and interchangeability, streamlining procurement and assembly processes.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global industrial supply chains.
• Versatile thickness range (0.064-0.104") accommodates slight variations, providing flexibility in gap filling and tension adjustment.

Professional Applications & Engineering Value

These USS flat washers made from 316 stainless steel address critical challenges in demanding industrial settings, such as corrosion from chemicals, saltwater, or high humidity. The flat washer design evenly distributes clamping force, preventing surface indentation and bolt head embedment in soft materials, which is essential for maintaining structural integrity in machinery, construction, and marine equipment. With a Rockwell B68 hardness, they resist deformation under heavy loads, ensuring long-term reliability in heavy-duty flat washer applications like pipelines, automotive assemblies, and structural frameworks. Their ASME B18.21.1 conformity ensures precise dimensions for seamless integration with 5/16" screw fasteners, reducing installation errors and downtime in industrial washers usage.

Specification Summary & Compliance

This USS flat washer meets ASME B18.21.1 specifications for dimensional accuracy, including an inner diameter of 0.375", outer diameter of 0.875", and thickness range of 0.064-0.104". It is manufactured from 316 stainless steel with a hardness of Rockwell B68 and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards for industrial applications.