S-90377A116 0.141" ID x 0.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coated 18-8 stainless steel, ideal for harsh industrial environments and extending service life.
• Precise dimensional fit with 0.141" ID and 0.625" OD, ensuring accurate alignment and secure fastening for No. 5 screws.
• Enhanced durability from Rockwell B68 hardness, providing reliable load distribution and resistance to deformation under stress.
• Consistent thickness control between 0.020" and 0.040", offering uniform pressure and reducing the risk of loosening in assemblies.
• Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries and global markets.
• Versatile inch system compatibility, making these flat washers easy to integrate into existing equipment and standard designs.
• Cost-effective maintenance due to long-lasting material properties, minimizing replacement frequency and downtime.

Professional Applications & Engineering Value

These black-oxide 18-8 stainless steel flat washers address common industrial challenges like corrosion-induced failure and inconsistent load bearing. The stainless steel core, enhanced by the black-oxide surface treatment, provides excellent protection against moisture, chemicals, and oxidation, making them suitable for outdoor, marine, or chemical processing applications. With a precise 0.141" ID and 0.625" OD, they ensure a snug fit on No. 5 screws, preventing misalignment and distributing clamping force evenly to avoid joint fatigue. This combination of corrosion resistance, dimensional accuracy, and Rockwell B68 hardness supports reliable performance in industrial washers for machinery, automotive, and electrical enclosures, reducing maintenance needs and enhancing assembly integrity.

Specification Summary & Compliance

This flat washer features inch system dimensions with an inner diameter of 0.141", outer diameter of 0.625", and thickness ranging from 0.020" to 0.040", designed specifically for No. 5 screw sizes. Manufactured from 18-8 stainless steel with a black-oxide finish, it maintains consistent hardness at Rockwell B68. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.