S-98049A128 0.906" ID x 1.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-4 PH stainless steel construction, ideal for harsh industrial environments and extended service life.
• Superior load distribution with a 1.75" outer diameter and 0.906" inner diameter, minimizing surface stress and preventing joint loosening.
• High mechanical strength and durability backed by Rockwell C40 hardness, ensuring reliable performance under heavy loads and vibration.
• Precision dimensional fit for 7/8" screw sizes, providing secure fastening and reducing assembly time in inch-system applications.
• Guaranteed environmental compliance with RoHS 3 and REACH regulations, ensuring safe use in regulated industries and global supply chains.
• Consistent thickness tolerance (0.136-0.161") for uniform clamping force and predictable performance in critical assemblies.

Professional Applications & Engineering Value

This 17-4 PH stainless steel flat washer is engineered to solve critical challenges in demanding applications where corrosion resistance and high strength are non-negotiable. Its precise inch dimensions (1.75" OD, 0.906" ID) ensure optimal load distribution, preventing surface damage and bolt loosening in heavy machinery, structural frameworks, and marine equipment. The Rockwell C40 hardness provides exceptional resistance to deformation under sustained pressure, making it ideal for vibration-prone environments and high-torque fastening systems. By utilizing this RoHS 3 and REACH compliant component, engineers can achieve long-term reliability while meeting stringent environmental and safety standards in aerospace, chemical processing, and offshore operations.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensional tolerances with an inner diameter of 0.906", outer diameter of 1.75", and thickness range of 0.136-0.161" for consistent performance. Manufactured from 17-4 PH Stainless Steel with a hardness of Rockwell C40, it is designed for use with 7/8" screw sizes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental safety and hazardous substance restrictions.