S-98035A109 17 mm ID x 28 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 a precise 17mm ID and 28mm OD, preventing surface damage and loosening under high stress.
• Enhanced durability from Rockwell 15N80 hardness, ensuring the washer maintains its shape and function under repeated heavy loads.
• Reliable fit for M16 screws, providing secure fastening and reducing assembly time with consistent metric sizing.
• Compliance with strict environmental regulations, including RoHS 3 and REACH, for safe use in regulated industries and global markets.
• Robust construction for heavy-duty applications, capable of withstanding intense mechanical forces without failure.
• Versatile industrial use due to its flat design and material properties, ideal for machinery, construction, and automotive assemblies.

Professional Applications & Engineering Value

This M16 metric flat washer is engineered to address common industrial challenges such as fastener loosening, corrosion-induced failure, and regulatory non-compliance. Crafted from black-oxide steel, it provides a protective layer that resists rust and wear, crucial for outdoor or humid settings like construction sites and manufacturing plants. The precise 17mm inner diameter and 28mm outer diameter ensure even pressure distribution, reducing stress concentrations on connected surfaces and enhancing joint integrity. With its Rockwell 15N80 hardness, it offers reliable performance in heavy-duty applications, from automotive frames to industrial machinery, where vibration and heavy loads are prevalent. By meeting RoHS 3 and REACH standards, it also supports sustainable operations, making it a trusted choice for engineers prioritizing safety and longevity.

Specification Summary & Compliance

This washer features standard metric dimensions with an ID of 17 mm, OD of 28 mm, and thickness of 3.0-3.9 mm, designed for M16 screw sizes to ensure precise fit and function. It adheres to common industrial specifications for flat washers, with material hardness rated at Rockwell 15N80 for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys and REACH (EC 1907/2006) as of January 17, 2023, covering 233 SVHCs, ensuring environmental and safety standards are met for global industrial use.