S-90377A114 0.141" ID x 0.375" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Enhanced load distribution due to precise 0.141" ID and 0.375" OD dimensions, reducing surface pressure and material fatigue
• Consistent performance with Rockwell B68 hardness, ensuring reliable mechanical strength and wear resistance
• Optimal compatibility with No. 5 screw sizes, providing secure fastening and vibration resistance
• Durable thickness range of 0.050-0.080", offering flexibility for various assembly requirements
• Environmental compliance with RoHS 3 and REACH standards, safe for regulated industries
• Long-term reliability in inch-system applications, minimizing maintenance and replacement costs

Professional Applications & Engineering Value

These flat washers are engineered to address common industrial challenges such as galvanic corrosion, uneven stress distribution, and fastener loosening under dynamic loads. The Black-Oxide 18-8 Stainless Steel material provides exceptional resistance to moisture, chemicals, and oxidation, making them suitable for outdoor equipment, marine hardware, and chemical processing installations. With a 0.141" ID and 0.375" OD, they ensure precise alignment with No. 5 screw sizes, preventing misalignment and extending the service life of assembled components. The controlled thickness range of 0.050-0.080" allows for consistent clamping force, crucial in automotive, aerospace, and machinery assemblies where vibration and thermal cycling are concerns.

Specification Summary & Compliance

This flat washer meets standard inch-system dimensional tolerances with an inner diameter of 0.141", outer diameter of 0.375", and thickness between 0.050-0.080". It is manufactured from 18-8 Stainless Steel with a Black-Oxide finish and Rockwell B68 hardness for consistent mechanical properties. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains.