S-91860A033 0.562" ID x 1.375" OD General Purpose Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-7 PH stainless steel, ideal for harsh industrial environments and outdoor applications.
• High strength and durability with Rockwell C40 hardness, ensuring reliable performance under heavy loads and vibration.
• Precise dimensional fit with 0.562" ID and 1.375" OD, providing consistent seating and load distribution for 1/2" fasteners.
• Optimized load-bearing surface due to controlled thickness (0.073-0.083"), reducing surface pressure and preventing joint failure.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.
• Long-term reliability in demanding applications, minimizing maintenance needs and replacement costs.
• Versatile inch-system compatibility, making it easy to integrate into existing North American machinery and equipment designs.

Professional Applications & Engineering Value

This 17-7 PH stainless steel flat washer is engineered to address critical challenges in industrial settings where corrosion, high stress, and precise fit are paramount. Its Rockwell C40 hardness provides superior resistance to deformation under load, making it ideal for heavy-duty applications such as construction equipment, automotive assemblies, and marine hardware. The corrosion-resistant properties ensure longevity in humid or chemically aggressive environments, reducing downtime and maintenance. With a precise 1/2" inner diameter and 1.375" outer diameter, it offers excellent surface coverage and load distribution, preventing bolt loosening and material damage. This washer is a reliable choice for engineers seeking durability and compliance in industrial washers for machinery, structural fastening, and precision equipment.

Specification Summary & Compliance

This flat washer conforms to standard inch dimensions with an ID of 0.562", OD of 1.375", and thickness range of 0.073-0.083" for use with 1/2" screws. It meets industry expectations for dimensional accuracy in general-purpose applications. The washer is manufactured from 17-7 PH stainless steel and hardened to Rockwell C40 for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.