S-93852A175 0.562" ID x 1.375" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments and extending service life.
• Enhanced load distribution due to the USS flat design with 1.375" OD, preventing surface damage and loosening under high stress.
• Precise fit for 1/2" fasteners with a 0.562" ID, ensuring secure assembly and reducing installation errors.
• Consistent mechanical strength from Rockwell B68 hardness, providing reliable performance and resistance to deformation.
• Compliance with ASME B18.21.1 standards, guaranteeing dimensional accuracy and interchangeability in professional applications.
• Environmental and safety adherence through RoHS 3 and REACH compliance, making them safe for regulated industries.
• Durable construction with a thickness range of 0.086-0.132", offering long-term reliability in heavy-duty use.

Professional Applications & Engineering Value

These Black-Oxide 18-8 Stainless Steel USS flat washers are engineered to address common industrial challenges such as corrosion, vibration loosening, and material fatigue. The Black-Oxide surface treatment on the stainless steel provides an extra layer of protection against rust and chemical exposure, making them ideal for outdoor, marine, and chemical processing applications. With their USS designation and inch system measurements, they ensure a broad load-bearing surface that distributes pressure evenly, reducing stress on connected components and minimizing the risk of failure in heavy-duty machinery, construction, and automotive assemblies. This design helps maintain bolt tension and integrity over time, supporting efficient maintenance and reducing downtime.

Specification Summary & Compliance

This washer features precise dimensions with an ID of 0.562", OD of 1.375", and thickness ranging from 0.086" to 0.132", adhering to ASME B18.21.1 standards for consistent quality and fit. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B68, ensuring durability and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.