S-98370A046 0.281" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for humid or chemically aggressive environments
• Precise load distribution across a 1.5" outer diameter, protecting surfaces and preventing fastener embedment
• Accurate fit for 1/4" fasteners with 0.281" inner diameter, ensuring secure assembly and reducing installation errors
• Consistent performance guaranteed by a controlled thickness range of 0.230-0.270" for uniform clamping force
• Environmental compliance assurance with RoHS 3 and REACH conformity, meeting global regulatory standards
• Long-term reliability in demanding applications due to the inherent durability of stainless steel
• Broad compatibility with inch-system components, simplifying inventory and procurement for North American operations

Professional Applications & Engineering Value

This 1/4" flat washer is engineered to address critical challenges in industrial assembly, such as surface damage, corrosion-induced failure, and inconsistent load distribution. The 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine hardware, food processing machinery, and chemical plant installations. Its 1.5" OD offers a wide bearing surface to distribute clamp load effectively, preventing joint loosening under vibration and thermal cycling. The precise 0.281" ID ensures a snug fit on 1/4" screws, minimizing misalignment during high-speed assembly lines. By incorporating this RoHS and REACH compliant washer, engineers can enhance product longevity and meet stringent environmental regulations without compromising on mechanical performance.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.281", outer diameter of 1.5", and thickness ranging from 0.230" to 0.270", designed specifically for use with 1/4" screws in the inch system. Manufactured from 18-8 stainless steel, it conforms to standard dimensional tolerances for flat washers. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances and safe for industrial use across regulated markets.