S-98025A045 1.562" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with a large 3" outer diameter and 1.562" inner diameter, minimizing surface pressure and preventing joint loosening under heavy loads.
• Superior corrosion resistance provided by the zinc yellow-chromate plating, extending the washer's service life in harsh or outdoor industrial environments.
• High-strength Grade 8 performance and Rockwell C43 hardness ensure reliable performance in demanding, high-vibration applications without deforming.
• Precise dimensional fit for 1 1/2" screw sizes, ensuring easy installation and secure fastening in inch-system assemblies.
• Enhanced durability and wear resistance from the hardened steel material, maintaining integrity under repeated stress and heavy clamping forces.
• Compliance with major environmental regulations, including RoHS 3 and REACH, making it suitable for global supply chains and regulated industries.
• Versatile industrial application due to its robust construction, ideal for machinery, structural steelwork, and heavy equipment assemblies.

Professional Applications & Engineering Value

This Grade 8 flat washer is engineered to address critical challenges in heavy-duty and high-stress environments. Made from zinc yellow-chromate plated steel, it combats corrosion and oxidation, which is vital for outdoor machinery, construction equipment, and industrial installations exposed to moisture. The Rockwell C43 hardness and Grade 8 strength ensure the washer maintains its shape under extreme pressure, preventing fastener failure in applications like structural bolting, automotive assemblies, and heavy machinery. Its precise 1.562" ID and 3" OD provide optimal surface contact, distributing loads evenly to reduce the risk of material fatigue and joint slippage. This makes it an essential component for engineers and procurement specialists seeking reliable, long-lasting fastening solutions that meet rigorous performance and industrial safety standards.

Specification Summary & Compliance

The washer adheres to standard inch system dimensions with an inner diameter of 1.562", outer diameter of 3", and thickness ranging from 0.235" to 0.264", designed for use with 1 1/2" screw sizes. It is manufactured from high-strength steel with a Rockwell C43 hardness and meets Grade 8 fastener strength requirements. Compliance is confirmed with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel, and it is fully REACH (EC 1907/2006) compliant as of January 17, 2023, supporting use in regulated and environmentally conscious industries.