S-98900A318 1.625" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel composition, ideal for harsh industrial environments
• Exceptional durability with Rockwell B83 hardness rating, maintaining structural integrity under heavy loads
• Precise dimensional fit with 1.625" ID specifically designed for 1 1/2" screw applications
• Enhanced load distribution through generous 3" OD design, preventing surface damage and material deformation
• Consistent performance with thickness tolerance of 0.235-0.265" ensuring reliable installation and pressure distribution
• Environmental compliance meeting both RoHS 3 and REACH standards for safe, regulated industrial use
• Long-term reliability in inch system applications, maintaining performance across temperature variations and mechanical stress

Professional Applications & Engineering Value

This heavy-duty flat washer addresses critical engineering challenges in industrial settings where corrosion resistance and load-bearing capacity are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical degradation, making it ideal for marine, chemical processing, and outdoor infrastructure applications. With its substantial 3" outer diameter, the washer effectively distributes clamping force over a wider surface area, preventing joint loosening and material crushing in high-vibration environments. The precise 1.625" inner diameter ensures perfect alignment with 1 1/2" screws, reducing installation errors and maintaining bolt tension integrity. These industrial washers deliver consistent performance in demanding applications including heavy machinery assembly, structural steel connections, and equipment mounting where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to exact inch system specifications with inner diameter of 1.625", outer diameter of 3", and thickness range of 0.235-0.265". The 18-8 stainless steel construction achieves Rockwell B83 hardness for optimal mechanical properties. This flat washer is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental responsibility and workplace safety in industrial procurement.