S-98689A257 9.9 mm ID x 17 mm OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh or humid environments.
• Precise dimensional fit with 9.9mm inner diameter designed specifically for M9 screws, preventing loosening and misalignment.
• Optimized load distribution thanks to the 17mm outer diameter and 1.4-1.8mm thickness, reducing surface pressure and material stress.
• Broad industrial compatibility with metric fastening systems, making it ideal for global machinery and equipment assembly.
• Environmental and safety compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries.
• Excellent durability due to the inherent strength of stainless steel, minimizing wear and maintenance needs over time.

Professional Applications & Engineering Value

This M9 flat washer in 18-8 stainless steel addresses critical engineering challenges in industrial settings, such as vibration-induced fastener failure and corrosion degradation. Its metric dimensions (9.9mm ID, 17mm OD) ensure a secure fit for M9 screws, distributing clamp load evenly to prevent joint fatigue and surface damage. The stainless steel material offers inherent resistance to rust and chemicals, making it suitable for applications in automotive, marine, food processing, and outdoor machinery. By incorporating this RoHS and REACH compliant washer, engineers enhance assembly longevity, reduce downtime, and meet stringent international regulatory requirements for industrial hardware.

Specification Summary & Compliance

This flat washer features precise metric sizing with an inner diameter of 9.9mm, outer diameter of 17mm, and thickness ranging from 1.4-1.8mm, designed for use with M9 screw sizes. Manufactured from 18-8 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring it is free from hazardous substances and safe for various industrial applications.