S-98035A104 6.4 mm ID x 13 mm OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to the black-oxide steel finish, extending service life in harsh industrial environments.
• Exceptional load distribution with precise 6.4mm ID and 13mm OD, minimizing surface pressure and preventing fastener loosening.
• Enhanced durability from Rockwell 15N80 hardness, ensuring the washer withstands high-stress applications without deformation.
• Reliable fit for M6 screws with consistent 2.0-2.9mm thickness, providing secure fastening and vibration resistance.
• Compliance with strict environmental standards, being RoHS 3 and REACH compliant, making them suitable for regulated industries.
• Versatile metric sizing for seamless integration into global engineering projects requiring standardized hardware.
• Cost-effective maintenance due to long-lasting material properties, reducing replacement frequency and downtime.

Professional Applications & Engineering Value

This M6 metric flat washer is engineered to address common industrial challenges such as corrosion, vibration-induced loosening, and load concentration. Crafted from black-oxide steel, it offers a protective layer that resists rust and wear in demanding environments like automotive assembly, machinery manufacturing, and outdoor infrastructure. The precise 6.4mm inner diameter and 13mm outer diameter ensure optimal force distribution, preventing damage to connected surfaces and enhancing the longevity of M6 screw fastenings. With a Rockwell 15N80 hardness, it maintains structural integrity under heavy loads, making it ideal for applications requiring reliable, corrosion-resistant washers that meet rigorous performance and safety standards.

Specification Summary & Compliance

This flat washer adheres to standard metric dimensions with an ID of 6.4mm, OD of 13mm, and thickness ranging from 2.0-2.9mm, designed for precise fit with M6 screws. It conforms to general industrial tolerances and is manufactured from black-oxide steel with a hardness of Rockwell 15N80 for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) as of January 17, 2023, ensuring it meets environmental and safety regulations for global use.