S-98370A115 0.5" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extending component lifespan.
• Exceptional load distribution due to the large 1.5" outer diameter, minimizing surface pressure and preventing material damage.
• Precise fit for 7/16" screws ensured by the 0.5" inner diameter, providing secure fastening and reducing assembly errors.
• Enhanced durability and deformation resistance from the Rockwell B68 hardness, maintaining performance under high stress.
• Consistent and reliable thickness between 0.170" and 0.200", guaranteeing uniform clamping force and joint integrity.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe and sustainable industrial use.
• Versatile inch system compatibility, making it a direct replacement in a wide range of existing North American machinery and equipment.

Professional Applications & Engineering Value

This 18-8 Stainless Steel flat washer is engineered to address common industrial challenges such as fastener loosening, corrosion-induced failure, and inconsistent load bearing. Its robust stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for demanding sectors like chemical processing, marine equipment, and outdoor construction. The precise 0.5" ID and 1.5" OD ensure a perfect match for 7/16" screw size applications, distributing load effectively to prevent surface indentation and joint fatigue. This flat washer is a critical component for assemblies requiring long-term reliability, reducing maintenance frequency and downtime in heavy-duty machinery, structural frameworks, and precision engineering projects where corrosion resistant washers are non-negotiable.

Specification Summary & Compliance

This washer conforms to standard inch system dimensions with an Inner Diameter of 0.5", Outer Diameter of 1.5", and a Thickness range of 0.170" to 0.200". It is manufactured from 18-8 Stainless Steel with a Rockwell B68 hardness for consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety standards for hazardous substances, making it a responsible choice for global industrial supply chains.