S-90377A185 0.625" ID x 1.375" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Precise dimensional fit with 0.625" ID and 1.375" OD, ensuring reliable alignment and load distribution for 9/16" screws.
• Optimized thickness range of 0.050-0.080" provides consistent compression and vibration dampening in demanding applications.
• Enhanced durability from stainless steel material, resisting wear and maintaining performance under mechanical stress.
• Environmental compliance with RoHS 3 and REACH standards, supporting sustainable and safe manufacturing practices.
• Broad industrial compatibility for use in machinery, construction, and automotive assemblies requiring inch-system components.
• Reliable surface protection through black-oxide finish, reducing galling and offering a professional appearance.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these flat washers made from Black-Oxide 18-8 Stainless Steel address common challenges like corrosion, loosening, and uneven load distribution. The precise 0.625" ID and 1.375" OD dimensions ensure a snug fit on 9/16" screw size fasteners, preventing misalignment in critical assemblies such as heavy machinery, structural frameworks, and outdoor equipment. The corrosion-resistant properties and robust material integrity reduce maintenance needs and enhance longevity, even in humid or chemically exposed environments. By incorporating these washers, engineers achieve improved joint stability, reduced vibration-induced failures, and compliance with industry standards for safety and performance.

Specification Summary & Compliance

This flat washer adheres to standard inch-system measurements with an inner diameter of 0.625", outer diameter of 1.375", and thickness ranging from 0.050" to 0.080". It is manufactured from 18-8 Stainless Steel with a black-oxide surface treatment for added protection. The product conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global supply chains. Designed for use with 9/16" screws, it provides reliable performance in various industrial applications without specific hardness ratings, focusing instead on dimensional accuracy and material consistency.